David Crosby, who enjoyed great success with The Byrds in the mid-1960s and then with Crosby, Stills & Nash (and sometimes Young) from the late 1960s onwards--and occasional success on his own and with Graham Nash--was a fine singer, capable especially of brilliant harmonies, but never as good a song composer as those he worked with. Here's a few notable songs he either authored or co-authored during his long career that are among my favorites:
He co-wrote one of The Byrds's biggest hits and most memorable songs, "Eight Miles High," from 1966:
My favorite Crosby composition is "Long Time Gone," from the CSN debut in 1969:
Of course, no remembrance would be complete without his title song of one of the best rock albums of the whole era, 1970's Deja Vu:
Feel free to add links to your favorite Crosby clips in the comments.