Legendary musician and co-founder of Crosby, Stills & Nash, David Crosby, has passed away at the age of 81. Crosby was part of the original line-up of The Byrds and appeared on their first five albums, including the 1965 hit cover of Bob Dylan's 'Mr Tambourine Man'. He also co-founded the folk rock supergroup Crosby, Stills & Nash along with fellow musicians Stephen Stills and Graham Nash. They later added Canadian singer-songwriter Neil Young to the line-up. Crosby's career spanned five decades and he was inducted into the Rock and Roll Hall of Fame in 1991. He released 11 solo albums throughout his career and was a two-time Grammy Award winner. In a statement to Variety, his widow Jan Dance said: "It is with great sadness after a long illness, that our beloved David Crosby passed away today surrounded by his family and loved ones. We ask for privacy during this difficult time.” David Crosby will be remembered as a pioneering musician and a true icon of the music industry. He will be greatly missed.