Produced by Glyn Johns and Jon Astley, "Who Are You" was released as a single in July 1978 and became one of their biggest hits, reaching No. 14 in the U.S. and No. 18 in the U.K.

“Who Are You’ was written about meeting Steve Jones and Paul Cook of the Sex Pistols after an awful 13-hour encounter with [record executive] Allen Klein,” Townshend wrote in the liner notes ...