In this video you will find all the music levels of Rayman Legends including the 8 bit versions. Do not play the 8 bit versions except Castle Rock and the Gloo Gloo level unless you know the level inside out. They are a lot more difficult because of the distorted/pixelated screens. they did say 8 bit... but you know...
The levels in order of how they were played in this video:
Castle Rock (Song: Black Betty, Thanks to jju00: I did a little research and this is a folklore song from U.S.A. so it has some versions that were very popular at their time, like Ram Jam's version, Tom Jones' version, and Spider Bait's version. The true autor is unknown.)
Orchestral Chaos (Some say Vivaldi four seasons but I dont hear it, my best guess is an original song by Ubisoft.)
Mariachi Madness (song: Eye of the Tiger)
Gloo Gloo (song: Woo Hoo by 5 6 7 8 from the movie Kill Bill)
Dragon Slayer: (song: Antisocial by Trust.)
Grannies World Tour (song: Rayman Origin theme Land of the Livid Dead, remixed with guitars)
In the exact same order the 8-bit versions as well. I have no idea from who each song was, if you do know, post it in the comment section and I will update the description!
Each song is heavily altered to fit within the style of the game.