I'll never forget my first listen to Who's Next, when I was about 9. I'd never heard a rock album so amazing and perfect. So much innovative songwriting and great playing, and it's beautifully recorded.
Producer Glyn Johns says that when Pete Townshend presented him with demos, he (Johns) demanded to know: "How the fuck am I supposed to improve upon that?" However, Pete's bandmates & producer rose to the occasion.