'Before the Flood' will be released on October 30
Listen to a track from the band's self titled album inside
Veteran axeman ends 20 year stint as group's fourth member
<em>Storyville: Atomic – Living in Dread and Promise</em> will be broadcast this Sunday
Percentage of proceeds go towards Glasgow skate park project
The ATP shows will mark Mogwai's 20th anniversary
The EP will be released on December 1
The frontman has been out canvassing voters to vote in favour of independence
However, the band say they have yet to write any music