Studio - 7. Revolver (album)

1. Music.

1.1. Melodic diversity and innovation in the studio.

A key production technique used for the first time on this album was automatic double tracking (ADT), invented by EMI engineer Ken Townsend on 6 April 1966. This technique used two linked tape recorders to automatically create a doubled vocal track. The standard method was to double the vocal by singing the same piece twice onto a multitrack tape, a task Lennon particularly disliked. The Beatles were reportedly delighted with the invention, and used it extensively on Revolver. ADT quickly became a standard pop production technique, and led to related developments, including the artificial chorus effect.