Growing Up Ira: Ira Sullivan was a legend in the jazz world, but to Brev Sullivan, he was Dad.

Attired in a shredded black muscle T and tight leather pants, long blonde hair framing his face, guitarist Brev Sullivan joyfully digs in on 1980s rock hits by the likes of Starship, Journey and Guns N’ Roses. Holding court on the stage at the Hard Rock Cafe in Hollywood in mid-October, Sullivan’s Skin City Angels...