The Velvet Underground, 1967. The Warhol-produced banana cover. Brian Eno's famous line — 'only 30,000 people bought it but they all started bands'.
From Wikipedia
The Velvet Underground & Nico is the debut studio album by the American rock band the Velvet Underground and the German singer Nico, released by Verve Records in March 1967. The album was recorded in 1966 on Ludlow Street, New York while the band were featured on Andy Warhol's Exploding Plastic Inevitable tour. Warhol, who designed the album's record sleeve, served as co-producer alongside Tom Wilson.