Mixing & Mastering Engineers, Producers & Songwriters who worked with Yang 21
I am a multi-versed songwriter with a strong foundation in Afrobeat, soul, and pop. I have written for a good number of artists with a great catalogue to show for it.
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Music is my passion. I play electric, acoustic guitars and ukulele. Awarded for contribution to the development of music education, preservation of cultural heritage and strengthening of international cultural ties. Winer of Many-faced guitar, Festos and String's Masters Battle. Played on the radio, TV, in a concert with Steve Vai & Apocalyptica.
I'm a music producer.
Session / Touring bass player specialized in Metal/Rock.
Experienced music producer with over 2 billion streams across platforms, specializing in crafting high-quality production, mixing, and mastering. Dedicated to bringing your vision to life with creativity and professionalism. Let’s create music that makes an impact together!
If you’re looking for a guitarist who turns up, reads it down, nails the tone, and lifts your track or tour to a new level of polish—then we should talk.
Crafting lush, ambient-infused beats with soul – ideal for chill vocal tracks or instrumental storytelling. Downtempo producer focused on warm textures, deep atmosphere & genre-blending electronica.
Need to add some great guitar tracks to your projects? Rock, country, fingerstyle, blues, classical... No nonsense and easy to deal with professional!
I write catchy, emotionally driven songs that actually stick. Specializing in R&B, trap soul, hip-hop, pop, K-pop, alternative rock & indie folk. Hooks, melodies, or full songs—I turn ideas into industry-ready records. If you want something different, let’s work.
Recent Successes
"My experience with Quantum was great! They really bought my song to life and the turnaround was extremely quick. I strongly recommend them to anyone!"
Matt"Once again, Jay delivered awesome lyrics!!"
frank stone"5 Stars for Jay - once again!!!"
frank stone"Jeff is a professional in every sense. He has a musical ear, he is devoted and he is easy to communicate with. I will highly recommend him!"
Sveinung H."Working with Sefi on my new remix has been fantastic, as usual! Extremely well mixed and mastered. Sefi perfectly understood what I had in mind! Thank You Sefi! Can't wait to work with him again in the future!"
User 2."Nice fast service."
Rudy D."B is very talented, easy to communicate with, and highly responsive. It was a pleasure working with her and I'll be looking forward to further collaboration in the future."
Sam F."My album was just released and of the 4 singers I recorded with, Jenny has the most songs on there (3). It's because of her great vocal tonal range and intoxicating harmonies which I LOVE."
Tar C."Mason is a force of nature! I read it over and over in comments about his vocals: "Even better than I could ever imagine." I'm a believer! See, now THIS is why we hire Nashville for kickass country tracks – and Mason?..."
Buff D.
