I know Elton Dean lent his first name to Reg Dwight, and Spooky Tooth's Luther Grosvenor became known as Ariel Bender when in Mott The Hoople and that Bat For Lashes is not Natasha Khan's real name so I'm thinking along pseudonymous lines here.
Not having ever heard of Michael Brecker, Wild Beasts or Michael Shrieve, however, almost certainly means I am this: barking up the wrong Hitler.