I think I made a similar thread to this in the past and was referred to Otocky for the NES. While I don't remember when or if I did, I still present this idea:
While not really as a submission for a TAS or a serious run, what would it look like if someone TAS'd a game, rendered a video encode to upload to YouTube (uploaded on their own account), but beforehand, they picked a certain real life song, somehow choreographed their input log to match the song's tempo and beats and somehow still managed to play the game all the way through?
As insanely retarded as it sounds, theoretically I think it could be done, in at least one way or another.
Here's my hypothetical theory of how it could work: First you pick the song in question, then you calculate in TAStudio/TASeditor's piano roll how long one second real life time is. However many frames it is, you then carefully listen to the selected song and track how long it takes during or until one real life second that you hear a bass, treble or drum note. You then apply that to the timing of the input in your piano roll of the game you're TASing and provided all goes well you could use this method with a whole playlist of songs mashed up with the video.
Thoughts?
A wise man once said "Damn, that's one hell of a steak."