David Van Cortlandt Crosby (August 14, 1941 – January 18, 2023) was an American singer, guitarist, and songwriter. In addition to his solo career, he was a founding member of both the Byrds and Crosby, Stills & Nash.Crosby joined the Byrds in 1964. They had their first number-one hit in April 1965 with a cover of "Mr. Tambourine Man" by Bob Dylan. Crosby appeared on the Byrds' first five albums and produced the original lineup's 1973 reunion album. He subsequently formed Crosby, Stills & Nash in 1968 with Stephen Stills and Graham Nash.After the release of their debut album, CSN won the Grammy Award for Best New Artist of 1969. Neil Young joined the group for live appearances, their second concert being Woodstock, before recording their second album Déjà Vu. Meant to be a group that could collaborate freely, Crosby and Nash recorded three gold albums in the 1970s, while the core trio of CSN remained active from 1976 until 2016. Crosby, Stills, Nash & Young (CSNY) reunions took place in each decade from the 1970s through the 2000s.