"A Song for You" was recorded at the sessions that produced Donny Hathaway's 1972 album Donny Hathaway Live, but it wasn't included on the original album. More than four decades later, it illustrates how Hathaway merged technique with pure emotion.
Michael Ochs Archives/Getty Images
The Who in 1969, the year the group released the rock opera Tommy. Earlier in the 1960s, the band says it only cared about singles. By 1971, it was making albums that would help define the "heritage rock" industry.
Steve Wood/Getty Images
"Jack [Rose] transcended the shadow of [John] Fahey, and I think that's really difficult to do," Steve Gunn says. "It was undeniable when he played — people paid attention."
Sam Erickson/Courtesy of the artist