7. "I Can't Explain" (Non-album single, 1964)
The quartet's debut single after changing their name from the High Numbers to the Who became a Top 10 hit in the U.K. in 1965, introducing them to a mass audience and jump-starting their stellar run of Sixties singles. "I Can't Explain" was a power-pop rocket of adrenaline riffs and raw clatter. "A blurter and burster," Townshend said of the song in 1968. Part of the credit for that blurting sound goes to producer Shel Talmy, an American who had moved to England to work for Decca Records. Talmy had recently helmed the Kinks' epochal single "You Really Got Me," which Townshend adored. "It can't be beat for straightforward Kink copying," Townshend said. "There is little to say about how I wrote this. It came out of the top of my head when I was 18-and-a-half." Unsure the Who were up to the task, Talmy brought in session musicians, including 20-year-old guitarist Jimmy Page, as well as backing vocalists to help with the song's harmonies. But the performance is unmistakably the Who, the opening bow shot in a 50-year story.