Watching a mute booth creator flat chest booth cat dance in FBT and flirt with my and give me a boner taught me something.

A delayed epiphany. Music contains memories. Memories of what you associated(halo effected it with). As such, emotions thoughts and feelings all pop up when you hear this music. Dance references the song, the music, which can reference the memories of the events of the halo effected media and/or traumatic memory.