Thanks for you comment and feedback! I actually agree with you!
We decided to not loop the music to force the player to go fast, because we intended to make a fast paced platformer. Also we thought that the game would become a puzzle game rather than a "rage" / fast paced platformer game.
If we ever update this game again, I'll make sure to add an easy mode that will loop the song forever.
Again, thanks for your feedback! I really appreciate it!