Philly's artsy Old City neighborhood is the perfect home to this lovingly kept shop, whose motto is succinct: "Rock is our life." That means no toys or memorabilia, a knowledgeable staff and a very deep catalogue of new and used rock, prog, avant-garde and jazz. Regulars boast endlessly about the rarities they unearth here – recently, A.K.A. sold a Bob Dylan mono LP and a Syd Barrett-era Pink Floyd album, each worth its weight in gold to collectors. Owner Michael Hoffman curates in-store performances shrewdly, insisting that the artists must match the sincere ethos of the store and staff – musicians like Kurt Vile, Bill Callahan and Kimya Dawson have all made the cut.