Do you mean the song started to loop after it was done? Thats my bad, I had the wrong length set for that level so you have to wait for 40 seconds after the wall portion ends for it to continue :(( Even after that you can't progress the game though for it just spawns you over a killbox over and over again :,D
I didn't have time to fix those in time for the deadline but I uploaded another version the day before where it's fixed. I'm glad you got in some nostalgia trippin' atleast! :)