No. 3 (“Led Zeppelin IV”) by Led Zeppelin (1971)
Zeppelin had become superstars with their over-the-top personas and ballsy blues-rock. On their officially-untitled fourth album, the quartet combined their knack for sludgy psychedelic guitar riffs and subdued English folk tunes. The combination resulted in their most balanced early album and a timeless record that captures everything great about the band.