<Li> Gene Clark--tambourine, rhythm guitar, harmonica, vocals (1964--66, 1967, 1972--73, 1991) </Li> <Li> David Crosby--rhythm guitar, vocals (1964--67, 1972--73, 1989--91, 2000) </Li> <Li> Michael Clarke--drums (1964--67, 1972--73, 1991) </Li> <Li> Chris Hillman--bass guitar, rhythm guitar, mandolin, vocals (1964--68, 1972--73, 1989--91, 2000) </Li>

Which of the following songs was the first single to be written by (not covered by) the byrds