2:43 American Top 40 Theme Music 1:53 American Top 40 (1984-87 Closing) 0:59 American Top 40 (1984-87 Hour Intro) 0:59 American Top 40 with Casey Kasem End of Hour Theme (1984-1987) 2:56 American Top 40 Closing Theme (\"Dark Disco\", 1979-84) 3:03 Billboard Top 40 Hits - November 30, 1991 - The Beginning Of the SoundScan area. 2:54 Top 10 songs of 1984 2:30 Casey Kasem radio spots \"American Top 40 - Best Of 1984\" w/ end theme 1:33 American Top 40 - 1984 - on the radio! 2:43 American Top 40 The 70s End of Hour Bumper Music and Second Closing Theme 2:25 AT40 70's Theme Song \"Shuckatoom\"