Storm Thorgerson, one of the key figures in album art graphic design, and who created some of the most iconic album covers in rock history, including ones for Led Zeppelin and Pink Floyd, died today at the age of 69. The artist died peacefully after having battled cancer for a long time, according to The Guardian.

The English-born Thorgerson had a storied career with the many album covers he created, but the signature one that may be the standout is the simple, yet stark and highly memorable triangular prism, emitting a rainbow of colorful lines set against a jet black background which made up the cover of Pink Floyd’s Dark Side of the Moon, an album which became one of the biggest sellers of all time and just recently celebrated its 40th anniversary.

Pink Floyd: The Story of Wish You Were Here, a documentary about rock group Pink Floyd‘s memorable album Wish You Were Here, is getting a DVD and Blu-ray release on June 26th from Eagle Rock Entertainment.

The album, which was their follow up to their enormously successful 1973 Dark Side of the Moon, is almost as revered by fans of the group as Dark Side is. Originally released in September 1975 and going to the top of the charts on both sides of the Atlantic and around the world, Wish You Were Here explores themes similar to Dark Side — alienation, confusion, longing, mental breakdown, and also even dissension in the music business. It’s also a tribute of sorts to one of their founding members, the late Syd Barrett, who had left the band a few years earlier, due to mental illness. The long track “Shine on You Crazy Diamond” is a recorded nod to their fallen member, who had also made a few unannounced appearances in the studio when they were recording the album. That track opens and closes the record.