Conversation so far:
what soundtracks did Mogwai make?
In 2006, the band provided the soundtrack to the film Zidane: A 21st Century Portrait.
how was it received by critics?
CANNOTANSWER.
any other soundtracks?
The band also collaborated with Clint Mansell and Kronos Quartet on the soundtrack to The Fountain in 2006.
Where there any other soundtracks after those?
Mogwai are also featured in the 2009 post-rock documentary Introspective.
The band donated an exclusive track to the PEACE project in April 2010 in support of Amnesty International.
what track did they donate?
an exclusive track.
any other interesting information in this section?
The album, Les Revenants, was released on 25 February 2013.
The track "Kids Will Be Skeletons" was featured.
how did critics receive that album?
The track "Kids Will Be Skeletons" was featured as part of the soundtrack of the story based video game Life Is Strange.
what other work did they complete?
In 2015 the band supplied the music for Mark Cousins' documentary Atomic, Living in Dread and Promise.
The soundtrack was reworked.

Question: why was it reworked?
Self-contained rewrite: Why was the soundtrack to Atomic, Living in Dread and Promise reworked?