A bouzouki playing researcher (the best kind) is investigating the phenomenon of "cognitive itch". You know: when a song gets completely stuck in your head.
He did extensive research on this, interviewing over 1,000 students:
"One person claimed—perhaps facetiously—that music from an Atari 260 videogame had been playing in his head since 1986."
The Germans have a great word for this : Ohrwurm (literally "earworm").