You can play the Lamm ("Jump") demo here:
http://www.lamm-game.fr/

This is the music for the first world you visit in the game. Each world has its own theme, the first being "forest". My goal wasn't necessarily to conotate that theme but to have something a bit less electronic-sounding and calmer than the other tracks.

There are 8 pieces of music in this soundtrack, I'll upload them as and when I finish them.