Donny Hathaway remains widely admired in jazz, but much of his repertoire has yet to be tapped by improvisers. Michael Ochs Archives/Getty Images hide caption

itoggle caption Michael Ochs Archives/Getty Images

Live at the Cellar Door, the new album from Neil Young, was recorded in 1970. Gary Burden/Courtesy of the artist hide caption

itoggle caption Gary Burden/Courtesy of the artist

Donny Hathaway. Michael Ochs Archives/Getty Images hide caption

itoggle caption Michael Ochs Archives/Getty Images