Bilbao BBK announces Of Monsters And Men, Alt-J and Mumford & Sons

Bilbao BBK has today (9/2) announced two massive names in folk-pop at this year's event Mumford & Sons (who are also headlining Reading + Leeds) and Of Monsters And Men. The news came shortly after Alt-J would be performing.

Bilbao BBK's line-up so far can be found here.