The Thrive soundtrack will accompany gameplay and will be played in the background. It will also feature in the menus and editors.
This page isn't entirely relevant anymore. See Sound Team for up to date information.
Link to the Music List thread in the forums:
Approved submissions playlist:
Also, here is the link to the Microbe Stage Soundtrack:
The original Main Theme was composed in December 2010 by Hongchong7 - the second and third versions can be viewed here:
Somerandomduderulz composed his own Main Theme concept here:
At the time of writing most are currently in favour of Hongchong7’s composition. In April 2013, Oliveriver remixed the original Main Theme to produce a theme suitable for acquiring God Tools, effectively winning the game. It can be listened to here:
It is possible the melody and accompanying piano of the original may be remixed further to produce separate themes for other major achievements, such as gaining sentience or sending an individual to space.
We now have more recent versions of the main theme, uploaded by Oliveriver, now v8 of the main theme. The short version was uploaded onto Youtube on May 3rd 2014 and the long version was uploaded on May 9th 2014.