Win Butler and Régine Chassagne team up with Jack Ü
The film will hit cinemas worldwide on September 24
The frontman has joined Samuel T Herring's band before
Both artists were performing at the Alabama festival over the weekend
The musician released his debut album 'Policy' in March
Agrikol will be launched by the band's Win Butler and Régine Chassagne during the summer
The Canadian musician released his solo debut 'Policy' in March
Win and Will Butler took part in a industry discussion about 'the celebrity economy in music'
Musicians will join Nobel prize-winning economist Paul Krugman at panel event