Question: who sang suite judy blue eyes at woodstock
Answer: `` Suite : Judy Blue Eyes '' Single by Crosby , Stills & Nash from the album Crosby , Stills & Nash B - side `` Long Time Gone '' Released September 1969 Format 7 '' 45 RPM Genre Folk rock , soft rock Length 7 : 28 ( album version ) 4 : 35 ( single edit ) Label Atlantic Songwriter ( s ) Stephen Stills Producer ( s ) David Crosby Graham Nash Stephen Stills Crosby , Stills & Nash singles chronology `` Marrakesh Express '' ( 1969 ) `` Suite : Judy Blue Eyes '' ( 1969 ) `` Woodstock '' ( 1970 ) `` Marrakesh Express '' ( 1969 ) `` Suite : Judy Blue Eyes '' ( 1969 ) `` Wood