He also collaborated on the song "Eyes of Time", from The Final Experiment, the debut album by Arjen Anthony Lucassen's project Ayreon.
Prior to forming the successful Kingdom Come, Lenny had moved from Germany to Los Angeles in 1983 signing with MCA Records with a band called Stone Fury.
It consisted of: lead guitarist Danny Stag, rhythm guitar Rick Steier, bassist Johnny B. Frank, and drummer James Kottak.
The band saw immediate success with the release of their eponymous debut album Kingdom Come, shooting to number 12 on the Billboard 200 and reaching sales at approximately 2 million worldwide.
[5] However, when the original lineup of Kingdom Come announced a 30th anniversary reunion tour in June 2018, Wolf declined to participate, for personal reasons, and was replaced by Keith St John.