After famously playing their second show at Woodstock in August 1969, David Crosby, Stephen Stills, Graham Nash, and Neil Young spent the rest of the year touring and writing songs for what would become CSNY’s 1970 debut, Déjà Vu. A newly discovered multi-track recording of the band’s September 20, 1969, concert at the historic Fillmore East in New York City captures an early moment from that first tour and will be released as a double live album on October 25.