Misc: With what instrument is the jazz musician Dexter Gordon associated?

Questions

Name the song: "___ ___, where you going with that gun in your hand?"?

Name the song: "Hang my head, drown my fear, 'til you all just disappear"?

Name the song: "In a _____ ____, with black curtains, by the station"?

Name the song: "Whooooa, heaven let your light shine down"?

Opening song of rock musical "Hair".?