David Crosby, legendary folk-rock voice of the 1960s, dies at 81

Starting in 1972, Mr. Crosby released a series of successful albums with Mr. Nash, his closest ally in the band

David Crosby, the outspoken and often troubled singer, songwriter and guitarist who helped create two of the most influential and beloved American bands of the classic-rock era of the 1960s and ’70s, the Byrds and Crosby, Stills, Nash & Young, has died. He was 81.

Patricia Dance, a sister of Mr. Crosby’s wife, Jan Dance, said in a text message on Thursday evening that Mr. Crosby died “last night.” She provided no other details.

Mr. Crosby was inducted twice into the Rock & Roll Hall of Fame, as a founding member of the Byrds and as a founder