John Bruce Wallace is an American composer and avant-garde, free jazz, fusion, experimental, improvisational progressive metal guitarist.

John's early influences included Sun Ra, Pink Floyd, Frank Zappa, Rahsaan Roland Kirk, and Jimi Hendrix.

This move focused John's attention more closely at free improvisation, jazz, and 'free jazz' as practiced in Europe, by established artists such as Ornette Coleman, Anthony Braxton, Sun Ra, Cecil Taylor, Derek Bailey, and by certain young artists at the time beginning to work in Alphabet City on New York's lower East Side.

[6][7] His improvised compositions often incorporate multi-tonal qualities, dense, interwoven passages embellished with harmonic and micro-tonal sound statements, or silence further defined by irregular syntaxed rhythms and primitive beats.

[2][3][5][7][8] In the independent music magazine Forced Exposure it was written about John,"For a guy whose list of desert islands discs contains works by Scelsi, Globokar, Kagel, Xenakis & others of the same ilk, it's interesting to hear such a loud, aggressively rock-like, feedback laden approach to solo...electric guitar.

[10][11] In his Jazz Podium review of the Vilnius Festival Bernd Jahnke wrote "Solo guitarist John Bruce Wallace, in free improvisation, revamped the modern guitar tradition and, using the technical possibilities of his instrument, transferred it into an individual sound language.

"[12] His recordings have received radio and Internet airplay across the United States, Canada, Europe, Russia, Central and South America, Australia, and Asia.

[20][21] He has recorded collaborations with Wilfried Hanrath (Hauchzart Ensemble), Pete Swinton, Antonella Eye Porcelluzzi, Vaders Orchestra (Ewald Wöstefeld), Siegfried Grundmann, and M. Nomized.

In the early 1990s John became afflicted with Ménière's disease/syndrome a long term, progressive vestibular condition affecting the balance and hearing parts of the inner ear.