How much do you know about Michel Pagliaro, a fairly obscure Montreal musician who released some hard-rockin’ power-pop ragers in the early ’70s? It’s fine if you don’t know anything at all. I didn’t. The people behind the New York indie label Outer Battery Records are big fans, and they’ve been hoping to reissue the 1971 album Pagliaro for a while. It hasn’t worked out yet, but they’ve just put together a very serious supergroup of indie rock lifers to cover a couple of his songs.