Obviously it's subjective, Scott. But excellent releases in '71 from the Stones, The Who, The Doors, T Rex, Led Zeppelin, Santana, Yes, Rod Stewart, Traffic and Janis Joplin! [posthumously] What ya got?!!
You can go on, Allman Brothers at Fillmore East, Humble Pie Rockin' the Fillmore, James Gang at Carnegie Hall, Jethro Tull with Aqualung, Kinks and Muswell Hillbillies, ZZ Top debuted, 4 way Street came out, the only CSN&Y record I can stand, Little Feat, Rory Gallagher's solo debut, Grand Funk Railroad, I still listen to Pictures at an Exhibition once in a while, the list goes on...