Our quest to find the best rock album of the ’70s is nearing completion, with only two albums remaining in the final round of our March Madness bracket.

Two universally acclaimed masterpieces will compete for your votes: The Who’s Who’s Next and Pink Floyd’s The Dark Side of the Moon. Both albums have triumphed over very famous records to reach this point.

Who’s Next, released in 1971 after Pete Townshend abandoned his original plans for an epic science fiction-based rock opera named Lifehouse, features classics like “Won’t Get Fooled Again,” “Baba O’Riley,” and “Behind Blue Eyes.”

The Who defeated the Beatles’ Let It Be, Van Halen’s Van Halen, and AC/DC’s Highway to Hell in the first three rounds, then overcame Tom Petty and the Heartbreakers’ Damn the Torpedoes by a 70% to 30% margin to advance to the finals.

The Dark Side of the Moon, released in 1973, has become the most acclaimed and universally beloved concept album in rock history, featuring famous songs such as “Money,” “Us and Them,” and “Time.”

Pink Floyd reached this stage by defeating David Bowie’s The Rise and Fall of Ziggy Stardust and the Spiders from Mars, Paul McCartney’s Band on the Run, and the Rolling Stones’ Sticky Fingers in the initial rounds, then narrowly edging out Led Zeppelin’s IV by a score of 53% to 47% to make it to the finals.

So who will take the crown? That’s up to you. You can vote once per hour until 11:59 PM EDT on Wednesday, April 1. The winner of UCR’s Best ’70s Album March Madness bracket will be announced on the morning of April 2.