Completely agree with you about this one,
Lee.
Certain music/songs just can't be played by single player on single keyboard and "Stayin' alive" is an perfect example of that. I can imagine it would be possible if most of the music would actually be a backing track... but in that case, what's the point?
Another option would be, if someone decides to make a "cover" of the song, where base rhythm is kept (so it's recognizable), however instrumental arrangement is totally different (adapted to keyboard playing). We can hear many covers of popular music & songs and it can even happen, that "modern" cover is "better" than original -not often, though.
Just thinking aloud here.. I leave that to more talented than I am