Production, Mixing & Mastering

With more than 20 years of experience, and over 150,000,000 streams, award winning London based Producer / Mixer / Mastering engineer Sefi Carmel, has produced, mixed, remixed and mastered tracks for David Bowie, Phill Collins, BB King, Massive Attack and many more. He has recently mixed Bruno Mars’ live show at the Cafe De Paris in London for broadcast Worldwide, and lately completed mixing 16 tracks for Michael Buble’s Live show for broadcast on ITV and Blu Ray release worldwide.

In his state of the art London based studio, he uses a combination of high end digital equipment, select analogue mastering gear, and a huge collection of vintage synths to create epic, LOUD chart topping results, that shine in any listening environment – radio and tv broadcast, web streaming to laptops, mobile devices, cars and clubs!

Sefi and the Soundtrack Creation team have worked with artists in over 200 cities around the globe.

They have developed an efficient, collaborative remote workflow. Simply send over the files for your song via web transfer and Sefi and his team will quality check everything before mixing and mastering your song to a commercial, professional standard, realising and executing your vision to your 100% satisfaction

Below are some examples of past mixes in various genres, as well as testimonials from artists who have collaborated with Sefi!

Testimonials

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Had a great time working with Sefi again. He does wonderful work! – Jin B

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | I have mixed our band’s EP in the past with Séfi, amazing work!
Now we asked him to collaborate and write/play keys on our next single. Just got the files, couldn’t be happier! – Rogerio M

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Wow!! I’m so happy to have Sefi as part of my project’s journey. It’s important that my songs have an analog ‘feeling’ reminiscent of the 70’s era. Sefi assessed all my files and gave very honest feedback. We got off to a great start! In fact, he was spot on with all of his mixing and mastering. Sefi has given so much life to my songs! His communication was very assuring throughout this whole process. I can’t say enough amazing things. I’ve enjoyed working with Sefi. – Jae Franklin

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi, was an absolute pleasure to work with. Great comunication and understanding from his side. I am very happy with the final results. A very worthwhile collaboration. – Ayman Scruffins

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | If you want an AMAZING sounding production, Sefi is the guy to get! I highly recommend him. – Bryan B

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | THE G.O.A.T, this man is unbelievably legendary at what he does. Everything I wanted he achieved. He has patience and listening skills that are extremely potent and the BIGGEST highlight of all is that he fully immerses himself into your vision. He isn’t only trying to just make your song sound great and ready, but he tries to execute the vision of the project to the highest degree possible, so that it becomes more than just a song, but becomes an experience. I highly recommend – Asher A

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Good work, as always & quick revisions, It’s pleasure to work with Sefi! – Lauyan

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is an absolute consummate professional and knows his craft very well. Additionally, he really cares about the music and adds a very personal, professional touch to it all. I look forward to working with him more. – J R

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | In all honesty, me and my bandmate were skeptical about working with an engineer online due to previous bad experiences and lack of results. Sefi not only proved us both wrong but delivered far more than we expected. His communication was concise, productive, and his responses were always extremely quick. He took in to account our vision and enhanced it even more by applying his own expertise and creative ear. Our finished track is miles better than we even knew possible. Thanks Sefi! much love – Hugo B

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Working with Sefi was a great experience. Communication with Sefi was easy, clear, and concise. As well as being a highly skilled professional, he is exceedingly patient and receptive towards any revision notes provided. I would definitely recommend Sefi and look forward to working with him again in the future. – Krystian L

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | I can always rely on Sefi to greatly improve my recordings and make them sound much more professional. Very happy to give him another 5* review for delivering once again  – Ben R 

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Had a great mix consultation with Sefi! He gave me very precise and helpful feedback, followed by the delivery of a superb Mastered track. – Mukura 

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | I am truly blown away by Sefi’s work on this track, he did mixing and mastering for me. The result is far far beyond my expectations, I think that he mixed and mastered the song in a highly creative way that is totally suitable for the song and adds to it immensely. – Sean H

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi was extremely professional and patient. His responses were polite and timely. But, most importantly, he took the time to answer any questions that I had, and did a fantastic job mastering the two songs that I submitted. I highly recommend working with Sefi! – Stephanie R

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | My frustration as a songwriter and amateur mixer is that I know how the song is supposed to sound, but I can never quite get it there. And when working with other mixers, I usually have to settle for their version of the song, rather than what I’ve been hearing in my head. But Sefi is different. Sefi just got it, from the very first mix, he opened the song up to sound how I had intended it. From beginning to end, he was professional, supportive, communicative, and just all around terrific! – Nicholas P

⭐️⭐️⭐️⭐️⭐️ | I loved working with Sefi. Super professional, fast and patient! Got a great result on the song and would absolutely recommend working with him!  – Aiden K

⭐️⭐️⭐️⭐️⭐️ | Sefi is phenomenal! He has such a great and thorough approach, he listened and worked with every idea I had to my song. Quick response times too! Overall he made my song sound amazing, definitely would work with him again! – Kyle F

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi was great and easy to work with. He delivered a great mix from the start, but was also very receptive to a few tweaks I requested. The final mix and master is excellent and I will be sending more tracks his way.  – Curtis

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is just world-class! He really paid attention to my vision and notes to give the song the shine that could not be achieved without him, bringing his own ideas and experience to give a fantastically mixed and mastered finished product!! – Ad B

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi let sound any mix outstandingly good! He mastered my songs exactly how I wanted! The communication was very good, and he always replied very fast. I look forward to work with him again! – Florian Gruber

⭐️⭐️⭐️⭐️⭐️ | Sefi’s attention to detail is astounding! He really knows how to put everything together in an artful, cohesive manner. I look forward to working with him again. – Joseph R

⭐️⭐️⭐️⭐️⭐️ |Firstly I want to give a massive thank you to Sefi Carmel for his professional working order and his hard work on mixing and mastering my track, my track is all the world playing on all digital platform and thats because our first release for strength to strength productions was done by the fantastic Sefi with his engineer skill of high standard.
Thank you very much for a wonderful job well done. We really love Intact, The mixed and mastered track it speechless. – Natalie S

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi delivers as per his promises. Great mix and production with crisp highs and thumping lows. On this project he dealt with tuning issues, timing issues and showed a great eye (ear?) for detail, picking up on things I hadn’t noticed myself. Top quality communications: Swift, personable, polite, enthusiastic, patient and always very clear.
He also did a good job of interpreting my requests for “tweaks” and “fine tuning”. – Peter S

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | I don’t have enough words to express my satisfaction for having been able to work with Sefi, whom I have always admired and consider one of the greatest sound professionals in the world. I also discovered with joy that he is a true gentleman, and that was fantastic! I hope I can produce a lot of good music with him again! – Beppe F

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi did a stellar job with our project and was wonderful to work with! The results are fantastic and the process was painless; he paid meticulous attention to the changes we requested to get every last detail sorted, and gave his expert suggestions wherever they were most needed. You really couldn’t ask for more. Highly recommended! – Ozzie S

⭐️⭐️⭐️⭐️⭐️ | Sefi took an okay mix and turned it into an excellent song! I will definitely be working with him more in the future– in fact I already am  – Henry K

⭐️⭐️⭐️⭐️⭐️ |This is the second time I asked for Sefi to mix and master my song this year. He is definitely the most professional and kindest person. The song turns out much more amazing than I expected. He would be my first choice in the future when I need mixing and mastering. – Xinyu S

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | I had the pleasure of drumming on one of Sefi’s productions! There’s a certain quality that experienced professionals always bring to a project, or session. I call it ‘Pro Land’
When Sefi gets in touch, I know I’ll be working in ‘Pro Land’ again! – Chuck Sabo

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | A very great experience with Sefi, as usual. He knows what I’m looking for, and he takes care to give the best. I recommend of course, and I will be back. Sefi is a magician. – Philippe D

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is an absolute consummate professional and knows his craft very well. Additionally, he really cares about the music and adds a very personal, professional touch to it all. I look forward to working with him more. – J.R.

⭐️⭐️⭐️⭐️⭐️ |I have mixed our band’s EP in the past with Séfi, amazing work! Now we asked him to collaborate and write/play keys on our next single. Just got the files, couldn’t be happier! – Rogerio M

⭐️⭐️⭐️⭐️⭐️ | Wow!! I’m so happy to have Sefi as part of my project’s journey. It’s important that my songs have an analog ‘feeling’ reminiscent of the 70’s era. Sefi assessed all my files and gave very honest feedback. We got off to a great start! In fact, he was spot on with all of his mixing and mastering. Sefi has given so much life to my songs! His communication was very assuring throughout this whole process. I can’t say enough amazing things. I’ve enjoyed working with Sefi. – Jae Franklin

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi, was an absolute pleasure to work with. Great comunication and understanding from his side. I am very happy with the final results. A very worthwhile collaboration. – Ayman Scuffins

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | If you want an AMAZING sounding production, Sefi is the guy to get! I highly recommend him. – Bryan B

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | The work Sefi did on my song is wonderful. He managed to give “that” sound I was looking for and that you can hear on professional records. For sure, Sefi is a true professional who knows what he is doing. His professional demeanor made our collaboration very pleasant and he addressed promptly all my requests for review always keeping a gentle and professional attitude. For sure, I will work again with Sefi in the future ! Thank you very much Sefi for making my song sounding so great ! – Raphael B

⭐️⭐️⭐️⭐️⭐️ | We worked on the mix until it sounded just like we wanted it. Sefi’s dedication is very evident and he’s easy to work with. Very good with communication! Thank you Sefi! – Vlad B

⭐️⭐️⭐️⭐️⭐️ | Excellent work, very professional, Sefi is the best! – Carlos M

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is a great mastering engineer! He truly took my track to another level. I will definitely be hiring him again! – Christian S

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | It’s my second time working with Sefi & definitely not my last! He did an amazing job on the mix & master I needed & went above & beyond the expectations I had! Thank you! – Steven P

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi was easy to work with and produced a high quality mix and master for my singer/songwriter holiday track. I’m really happy that I had the chance to work with Sefi and recommend him to anyone looking for a professional level mix and master! – Elliot B

⭐️⭐️⭐️⭐️⭐️ | No Complaints with this guy. The final mix was great and makes the song POP! Also a big plus because he gave me an estimated date to finish and he was on time! 5 Stars. Great Job. – Ben R

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is outstanding. Very punctual, great communication and understands exactly what you are going for in terms of sound. Ended up with several mixes of the same song which all sounded quite different and equally usable depending on the final style choice. Highly Recommend! – Thomas M

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Gave us just what we needed….and a pleasure to work with. – Jason E

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Very professional and empathic. Sefi is a wonderful person to work with. I was very glad about the resulting mixing/mastering of the song. – Giovanni V

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Amazing experience working with Sefi! Fantastic mix, quick turnaround, and great communication! Highly recommended! – Thor S

⭐️⭐️⭐️⭐️⭐️ | I am pleased and honored to have Sefi collaborating with my song, his expertise and professional demeanor made communication easy to flow and we were able to reach my vision coupled with his knowledge. I am satisfied and grateful of this experience – Oscar S

⭐️⭐️⭐️⭐️⭐️ | This is my second job with M. Carmel. I could not recommend him more. Working with him is a delight: quick & clear communication, excellent understanding of my vision and delivered a result beyond my expectations. Can’t think of someone else to do my mixes. – Julian T

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | this third time we work with this great man and awesome mixer : it’s great, professional and Groovy. We do recommend him – Marie L

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | High quality, professional work! Sefi’s experience and good ear for sound exceeded my expectations and delivered me a product that I was extremely satisfied with! Will definitely work with him again!  – Nathan W

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi did a wonderful job mixing and mastering my song! I highly recommend and will have him mix again. – Scott P

⭐️⭐️⭐️⭐️⭐️ | Sefi is absolutely amazing! He is kind, thoughtful, and eager to take your sound to a whole different level. This is my first time working with Sefi and I know for a fact, it won’t be my last. If you are thinking of choosing a mixing/mastering engineer, go with Sefi! – Bruce R

⭐️⭐️⭐️⭐️⭐️ | Sefi is very skilled and professional. He will make your song sound great in the way you want it to. – Jacques A

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Mr. Sefi is a true professional patient, kind, understanding and determined to get your song to sound exactly how you want it! It was truly a wonderful experience! I would highly recommend him and look forward to working with him again in the future! – Tevin Flashley

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Amazing at his job. Exceeded my already high expectations. Sefi is a professional and a true pleasure to work with. I look forward to working with him again. He really knows what he’s doing. I can not recommend him enough 🙂 – Xavier F

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is a musical genius. In addition, he is a caring soul with kind heart. Given the nature of the human condition, one does not often come across such a convergence of humility and mastery. It’s a miracle really. But then again, so is music, good music. If you want your songs to be all they can be, Sefi is your man. – David

⭐️⭐️⭐️⭐️⭐️ | Work with Sefi is a pleasure! He is nice, fast and very professional. – Louis L

⭐️⭐️⭐️⭐️⭐️ | If you are looking for a great recording and experience that exceeds your expectations, I highly recommend Sefi. Not only is he the ultimate professional as far as responsiveness and delivering on time are concerned, but he has an amazing ability to understand and translate your vision to the finished product. This combination of artistry, extensive experience and skill is a rare find. – Bryan B

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | The work with Sefi Carmel is fantastic. I love sefi carmel ability to bring my music to the highest level.
I want to keep working with sefi!!!! – Yoonsungwon

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | It has been a pleasure working with Sefi again! He is very good at his craft and delivered a brilliant mix/master. Hope to work with him again in the future! – Vari S

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is a magician and an absolute pleasure to work with! I have worked with several engineers on soundbetter and he has been by far the best. Highly recommend. – Will G

⭐️⭐️⭐️⭐️⭐️ |Sefi has just completed mixing and mastering the final track of my 11-song album. Sefi’s sonic sensibilities are amazing, his professionalism is unmatched, and he is above all, a gentleman. It’s been a great journey with Sefi and I know I’ll be back. – Patrick O

⭐️⭐️⭐️⭐️⭐️ | Sefi did a beautiful and professional job ‘renovating’ my song. I appreciate the great care he took in selecting best live instruments to bring a thick, warm and effective power. Looking forwards to bringing my next songs to Sefi! – Omondi N

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi takes the stress out of delegating your mixing to an engineer. He got this last set of mixes back to me in record time and got things sounding exactly as they do in my head. We were definitely on the exact same wavelength for this project. You’re in good hands with Sefi.  – Michael B

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | My second collaboration with Sefi, and I’m just as happy as the first time. He’s a pro in every sense and treats you and your song with the deepest respect and professionalism. Can’t wait to work with him again. – Martin L

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Top producer , top quality, always doing a great job in my songs. – Auressa

⭐️⭐️⭐️⭐️⭐️ | What an amazing ear Sefi has, I highly recommend working with him. – Josh Berkeley

⭐️⭐️⭐️⭐️⭐️ |Sefi worked on my vision with me for my song & bought it life. It was more than I excepted. He took his time & was super thorough through out the process. Almost speechless at how amazing this song came out, Sefi is the best out there. – Steven Paul

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | This is my second project with Sefi and I just as pleased as I was the first time. His attention to detail, his professionalism and skills are second to none. If you want your project on par with what you hear on radio then this is your engineer. You will not be disappointed. – Christopher S

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | Sefi is the ONLY person I call for my post-production needs. I’ve been doing so for well over a year and every time we work together he is professional, courteous, thorough, and utilizes his talents to take my projects to the next level. Thank you, and until next time! – Glenton D

⭐️ ⭐️ ⭐️ ⭐️ ⭐️ | I’ve worked with dozens of mixers before and I have to say honestly, that Sefi is absolutely one of the best. The mix is very robust and it leaves the ear begging for more! Sefi is definitely an artist’s mixer. I cannot recommend him more. – Llghtchild

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