Mixing & Mastering Engineers, Producers & Songwriters who worked with SeMi

Welcome to Ultra Mastering — where your music gets the professional mix and master it deserves.

When I was 4 I started Musical School, piano section. There I had also singing, composing and theory classes, but when I started high-school I stopped it and I did it only as a relaxation. Then I started writing lyrics and I participated in different contests and I was awarded with semi-finalist place at Song of the Year. This was my best place.

I'm a speed producer/songwriter/singer... creating hits in 45 minutes from the instrumental to the vocals, mixed and mastered.

I've Spent Years Developing My Talents... Years Making A Name For Myself. Soon I Will Be Globally Successful And Recognized. As A Songwriter I Use My Government Name (Gregory Dell-Charnell Johnson)

Highly trained in Indian Classical music and teach as well. Extremely creative multi-genre singer, composer, and songwriter with over 25 years of music experience, I have performed genres from pure Indian classical/Semi-classical to light/contemporary/Bollywood. Trained by stalwarts in music, and have collaborated with several artists. Originals

Versatile trained vocalist and arranger. NO AUTOTUNE used for a clean and natural result. Emotionally driven vocals. Meticulous and accurate work. Professionally trained with Italian singer and vocal coach Tony D’Alessio (X Factor 7’s semifinalist, more than 30 years of touring around the world and frontman of Banco del Mutuo Soccorso).

Highly accomplished and experienced session cellist. Regular clients include Evolving Sound Trailer Music; award winning composers, Christopher Tin and Christoph Zirngibl; and producer/ songwriter, Don Mescall.

Mixing & Mastering Engineer passionate about Rock, Indie, Urban, and Electronic music. I serve artists by elevating the emotion and energy of their songs, bringing clarity, depth, and impact. Every track is treated with care to ensure it connects deeply with listeners and sounds amazing everywhere.

Soulful, genre-fluid lead and background vocals from a Nashville-based Lumbee/Tuscarora artist. From Carnegie Hall with Rhiannon Giddens to the Grand Ole Opry with Rissi Palmer, I bring emotional depth, rich harmonies, and unmistakable character to Americana, country, soul, gospel, and beyond.