1971- The Year in 50 Classic Rock AlbumsSeveral of the bands that would come to define classic rock were just beginning to put down solid foundations—some holdovers from the ’60s (Pink Floyd, the Stones, the Who, the Doors, Jethro Tull, Led Zeppelin, Santana, Sly), others brand new new to us (Allmans, Sabbath, Yes, Alice Cooper).