"Trick of the Light" is a song written by bassist John Entwistle for The Who's eighth studio album, Who Are You. The lyrics describe fear of being sexually inadequate in the face of a prostitute. It features a guitar-like assault throughout the song, described by Pete Townshend as sounding like "a musical Mac truck" and is actually Entwistle's heavily distorted eight-string Alembic bass. It was performed occasionally on The Who's 1979 tour with Entwistle on eight-string and Townshend playing one of Entwistle's Alembic basses used on the 1975-1976 tours. It made its return to the setlist in 1989, with Townshend originally on electric guitar on the two Toronto dates in June and acoustic guitar for the rest of the tour. It was disliked by Roger Daltrey, who thought that although it had clever lyrics, it was too long.