Place this clip at the very end of a farewell scene, after the final line of dialogue, then follow it with a Funny Ha Ha Laugh Sound Button moment if the exit was playful, or leave it as the closing beat for a group send-off edit.
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This is a short 7-second music clip built around a crowd-style chant of na na na, hey hey hey, goodbye, sung in unison as a playful send-off. It feels cheerful, teasing and a little triumphant, like a whole group joining in to wave someone out the door with a grin instead of a serious farewell.