New music wanted

Hi there,
as we're currently redesigning our forest world, we realized that we're in need of some music. Highest priority would currently be
For the distant future, we might also need tracks for new worlds, e.g. tropical island.
Current music is available at https://github.com/SuperTux/data/tree/master/music for reference.
Edit: of course this should be under a reasonable license, e.g. CC-BY-SA 4.0
as we're currently redesigning our forest world, we realized that we're in need of some music. Highest priority would currently be
- (A new soundtrack for "Shocking" - a forest level with a dark atmosphere. There's a thunderstorm, and the water you have to walk through is sometimes electrified) Edit: in work by krobonil
- A second soundtrack for forest castle levels - also dark places, with lava
For the distant future, we might also need tracks for new worlds, e.g. tropical island.
Current music is available at https://github.com/SuperTux/data/tree/master/music for reference.
Edit: of course this should be under a reasonable license, e.g. CC-BY-SA 4.0