Okay, this seems to have died down somewhat, I was sick over the weekend and I'm kinda struggling for clues once the song itself has been correctly guessed, so
Clue #5:
If you know what the song is AND think about clue #3 AND you don't necessarily change what you don't need to, you might get a bit closer to the altered title.
Also, although this particular kitty is cute, do they all have to be?