Band treat US fans to 'Wilder Mind'
The band release their third album 'Wilder Mind' in May
The band's third album is set for release on May 4
Band will return to Oslo venue for second time tonight
The band performed their third album for the very first time at Oslo in Hackney last night
Band's new song 'Believe' will also receive its first play on BBC Radio 1
Ben Lovett reveals origins of songs that feature on 'Wilder Mind'
Ben Lovett admits the band "felt a need for change"
Band's third album will be released in May
Mumford makes rare live appearance at Guildhall show