The seeds for French's musical life were planted in 1963 when he attended his first concert, the folk group The Weavers at Carnegie Hall.

Two months before graduation, French dropped out of George Washington High School, as a protest to the student murders at Kent State University on May 4, 1970.

[7] The band also included Michael Valentine (vocals), Billy Diamond (guitar), Kenneth Harrison Neill (bass) and Mell Star (drums).

[9] In late 1975, Eddie Ojeda replaced Keith Angel on guitars, and Daniel Dee Snider joined the band in February 1976,[10] to relieve French from his vocalist duties.

Gradually, the band's glam image and music changed into a heavier direction, with influences by artists such as Led Zeppelin, Slade and Alice Cooper.

[13] Twisted Sister released five studio albums between 1982 and 1987, including Under The Blade (1982), You Can't Stop Rock’n’Roll (1983), Stay Hungry (1984), Come Out And Play (1985) and Love Is For Suckers (1987).

"[15] Following the departure of singer Dee Snider and guitarist Eddie Ojeda, French along with bass player Mark Mendoza made a move in 1987 to cease performing live.

He also signed R&B singer George Taylor, blues legend Johnny Gale,[16] David Forman, Thom Jack, Ean Evans' Cupid's Arrow and Tina Sugandh for her debut record.

[18] In partnership with Dennis Berardi, president of Kramer Guitars, French signed the Atlanta-based hard rock band Redd Threat.

[19] French then partnered with friend and former Sony Records executive Sean Sullivan, and founded a new management company called Rebellion Entertainment.

[21] On June 10, French received the New Hampshire Excellence in Education award for "Efforts to Curb Substance abuse Among Young People".

"[24] French signed with Razor & Tie for the 2006 release of the band's "A Twisted Xmas - Live In Las Vegas" on DVD, CD, and Digital Video/Audio.

[27] French stated in 2018 current incarnations of Judas Priest and Foreigner were cover bands because most of their classic lineups were no longer involved.

French lives on the Upper West Side of Manhattan with his third wife Sharon Gitelle, whom he married in Las Vegas in 2016 after a 13-year courtship.