>>18355249 (OP)Happened to Christian a few times.
When he first debuted the "At Last" intro after the edge breakup with the choir and the sparkles from the ceiling it included a bit of a weird guitar section between the choir sections and some additional vocals. Also, 9/11 happened the next morning.
It didn't really work well, but within a couple of weeks it had been re-worked so when he won the intercontinental title from Edge he came out to the perfected version. But like always, WWE had to fuck with it so in 2003 they slowed it right down to the point it sounds weird and re-introduced the stupid additional vocals that were taken out of the 1st version. A month later they dumped it and it went to some awful generic guitar riff.
Finally in 2004 he got his brilliant Just Close Your Eyes theme with the Waterproof Blonde female vocals. I assume that the rights were only temporary which is why when he returned in 2009 and got the meme "It's... Christian" from Todd Grisham, he had the faster nu-rap male vocal version which isn't as good.