Vanilla Fudge is an American rock band that originated in the mid-1960s. Known for their distinctive sound, the group combined elements of psychedelia and heavy rock, often extending and slowing down popular contemporary songs to create a unique, dramatic effect. The band is primarily composed of Mark Stein, Carmine Appice, Tim Bogert, and Vince Martell. Their most influential work, a slowed-down, hard-driving cover of the Supremes' "You Keep Me Hangin' On," exemplifies their innovative approach and has been cited as a precursor to the heavy metal genre.