Herman Frank joined Accept in 1982 shortly before the release of their album Restless and Wild. He replaced guitarist Jan Koemmet, who had been hired for Jörg Fischer but had left the band before the recording sessions. Frank himself departed after the release of the following (and the band's most successful) album, Balls to the Wall, in 1983.
When Accept reunited for festival appearances in 2005, it was with Herman Frank in the spot alongside constant presence Wolf Hoffmann. He was involved in the band's recent reunion and appeared on their 2010 album, Blood of the Nations, their first album in 14 years, and its follow-ups Stalingrad (2012) and Blind Rage (2014). On December 28, 2014, Frank announced that he has left Accept again.