"Turn On, Tune In, Cop Out" is a song by Norman Cook's acid jazz group Freak Power, released in October 1993 by Island Records and 4th & Broadway as the debut single from their first album, Drive-Thru Booty (1994). The song features a smooth jazz sound and the baritone vocals of lead singer Ashley Slater. The single originally charted at number 29 in the United Kingdom. However, two years later, the song was used in the popular Levi's advertisement "Taxi", and it was re-released on 6 March 1995. This time, the single was a success, reaching number three on the UK Singles Chart and becoming the group's only top-20 hit. The song was also a moderate hit in western Europe and New Zealand.