John Michael Erlewine (/ˈɜːrlwaɪn/; born July 18, 1941) is an American musician, astrologer, photographer, TV host, publisher and Internet entrepreneur who founded the music online database site AllMusic (formerly known then as All Music Guide) in 1991.
Erlewine has had several careers. As a musician, he was active in the Michigan folk scene in the late 1950s and early 1960s. In 1961 he hitchhiked with Bob Dylan, and had traveled to Greenwich Village, Venice, California, and San Francisco. He and his brother Dan founded a blues band called The Prime Movers, which regularly played Chicago; other members included “Blue” Gene Tyranny (Robert Sheff). When the drummer left, they replaced him with Iggy Pop (James Osterberg), then 18 years old. The Prime Movers gave him the nickname “Iggy” as he had played in the band The Iguanas. According to biographer Jim Ambrose, the two years Osterberg spent in the band made him aware of “art, politics, and experimentation”.