Cover art for Pink Floyd's 1973 smash-hit album Dark Side of the Moon, which turns 50 years old today. Courtesy of the artist hide caption
Pink Floyd
Top row, left to right: Sonny Singh, Charlie Hickey, The Good Ones; Bottom row: Pink Floyd (left to right: Nitin Sawhney, David Gilmour, Nick Mason and Guy Pratt) Courtesy of the artists hide caption
David Gilmour, of Pink Floyd, performs live on stage at Madison Square Garden on April 12, 2016. Matthew Eisman/Getty Images hide caption
The lineup of Santana as of May, 1969, photographed in San Francisco. From left: Michael Shrieve, Carlos Santana, Gregg Rolie, Jose 'Chepito' Areas, David Brown and Michael Carabello. Michael Ochs Archives/Getty Images hide caption
The Clash's Joe Strummer (R), Mick Jones (C) and Paul Simonon. STR/AFP/Getty Images hide caption
David Gilmour standing inside the amphiteatre in Pompeii for the first time since Pink Floyd recorded a concert film there in 1971. Sarah Lee/Courtesy of the artist hide caption
David Gilmour On World Cafe
Synalpheus pinkfloydi, which was recently named after the band Pink Floyd, for the distinctive coloration of its claw. Arthur Anker/Courtesy of Sammy De Grave and Oxford University hide caption
Pink Floyd. Storm Thorgerson/Courtesy of the artist hide caption
Pink Floyd's Nick Mason On World Cafe
Pink Floyd drummer Nick Mason performs live in Denmark in 1971. Jorgen Angel/Redferns hide caption
Guest DJ Nick Mason On Pink Floyd's Early Years
Pink Floyd in 1972, left to right: Nick Mason, David Gilmour, Roger Waters and Rick Wright RB/Redferns hide caption
On getting surprisingly close to the band
The program handed out at The Kennedy Center for Pink Floyd, May 3, 1972. Courtesy of the artist hide caption
Pink Floyd in 1967. (L-R: Nick Mason, Rick Wright, Roger Waters and Syd Barrett) Michael Ochs Archives/Michael Ochs Archives/Getty Images hide caption
Pink Floyd in 1967. (L-R: Nick Mason, Rick Wright, Roger Waters and Syd Barrett) Michael Ochs Archives/Getty Images hide caption
Roger Waters performs onstage during Desert Trip at the Empire Polo Field on October 9, 2016 in Indio, Calif. Kevin Winter/Getty Images hide caption
Roger Waters Announces 'Us And Them' Live Tour
David Gilmour's new album, Rattle That Lock, is out September 18th. Courtesy of the artist hide caption
David Gilmour Plucks A Melody From The Air With 'Rattle That Lock'
Producer, engineer and musician John Congleton. Jeaneen Lund/Courtesy of the artist hide caption
Connecting the folk tradition to Dark Side of the Moon, Roger Waters closed out the first day of the 2015 Newport Folk Festival. Adam Kissick for NPR hide caption
Mozart is great for babies, but what about Miles Davis? [Note: This child does not belong to Robin Hilton.] Joe Klamar/AFP/Getty Images hide caption