Arcade Fire guitarist to play four UK dates in April
Proceeds from sales will go to the Partners in Health and Haiti Coffee Academy charities
Tour in support of singer-guitarist's forthcoming album
Solo album 'Policy' will be released on March 16
Butler will release 'Policy' in March 2015
'Policy' follows the Academy Award nominated 'Her' score
Singer is currently working on his debut solo album
'Festi' is a 21-minute long film centred on Win Butler's gory 27th birthday
'Bronx Obama' tells the story of New Yorker Louis Ortiz
Régine Chassagne and brothers Win and Will Butler interviewed