Mixing & Mastering Engineers, Producers & Songwriters who worked with Hallyways
Hi, I’m JJ Rosario — a professional studio and live drummer with over 15 years of experience and 8+ years specializing in studio recording sessions.
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Top 1% of Mixers in the world, Platinum mixing and mastering engineer with over 2 billion streams. Worked for all major labels and artists like Missy Elliot, Royal & The Serpent, The Game, Flyana Boss, Kaliii and more.
Sound Designer (full time @ Splice), music producer, mixing engineer, and songwriter based in Los Angeles, California specializing in various electronic music genres, with a focus on Melodic House, Pop/Edm, Progressive House, Trance, Melodic Techno, Retrowave/Synthwave, and Darkwave.
With over 12 years of professional experience I can help you find your sound and bring your songs to life. I have worked with multi-platinum/Grammy Award winning artists & producers such as Diplo, Avicii, Daddy Yankee, Lil Pump, Mike Posner and many more!
I can make anything sound Exotic.
Multi-genre session vocalist and songwriter with over 10 years of training. I write in both English and Italian, and sing in English, Italian, Spanish, and Japanese. Listen to my reel to get a feel for my voice, versatility, and style.
In addition to composing, producing, and performing her own music, she has also has toured the world with artists such as Jon Batiste, Terrace Martin, Marcus Miller, Kamasi Washington, Terri Lyne Carrington, Ledisi, Lizz Wright
I am a passionate songwriter who crafts lyrics that turn emotions into unforgettable songs.
Recent Successes
"5+ stars for the amazing service provided by Austin in the co-production of a track. Will work again together. Amazing!"
"A very talented producer."
"Once again, remarkable work from a very talented individual. Everything went as expected and the turn around time was quick. Any changes that I requested were made without hesitation & the song sounds amazing, many th..."
"Excellent communication and beat making skills. He did exactly what I needed."












