UPDATE:
Last update didn't work

Reasoning:
Because I'm inept and wrote the files left4dead2_dlc3 instead of dlc2...I'm a great modder.

UPDATE:
This mod should now be compatible with the L4D1 campaigns

This mod now replaces the following

skinonourteeth
skinonourteeth_l4d1

UPDATE:
After vigourous testing, I found out the problem and fixed it. This isn't an update that may or may not work, this works. Period
Fixed issue last two updates tried to fix Music speeding up and ending abruptly is no longer an issue.

Reasoning:
Audacity decided to be stupid and made the music in Mono form and not Stereo form so I remade the song completely, made it stereo, and polished it better than last time so the repeat didn't sound weird.

If you have any other issues or suggestions, please comment. Thank you!

UPDATE:
fixed an issue where previous issue wasn't resolved
fixed an issue that would make the game crash if you ran away from the escape and then come back after the music abruptly stopped.

Reasoning:
Honestly no clue, this is my second attempt at fixing this issue, and if it happens again, then I will remake the entire song.

please comment if you find any other issues, thank you!

UPDATE:
Fixed an issue where the music would speed up and end abruptly.

Reasoning:
Because of how music works in L4D, you needt to make the music start and end at the same time as the original, however the song ended in a weird way so instead I spliced up the audio file to make it smoother. However I didn't have them connect and sent this mod out, so the game was reading the first file and sped it up so it could match the same time as the original music. I've connected the audio files properly now and this should not be an issue anymore

Please tell me if you find any more issues with this mod, thank you!