There's no exact end date to the British Invasion, but most rock historians agree that it petered out by 1967. By that point, American rock groups (many from California) had started to blow up, and you no longer needed a British accent to be a rock star. In fact, the failure of the Who to score a gigantic hit with their brilliant 1967 single "I Can See for Miles" may be the very moment it all ended. The song ranks among the Who's very finest work and Townshend was extremely proud of it, fully believing it would hit Number One. When that didn't happen, he began to work on even more ambitious music. His next release was the band's 1969 rock opera, Tommy.