Peter Frampton, 69, is midway through his Finale: The Farewell Tour. He’s saying goodbye because of a diagnosis of inclusion body myositis, a degenerative disease that will eventually affect his ability to play guitar. For now, he’s still an agile player and a crowd-pleasing performer. Jason Bonham’s Led Zeppelin Evening got the night started with a tribute to his late father John and his Led Zeppelin bandmates.