If you're into that folk-rock, bluegrass sound of the Dropkick Murphys, you'll love Mumford and Sons. This band, led by front-man Marcus Mumford, hail from across the pond and embody that indie rock sound that I find most characteristic of Irish rock, utilizing instruments such as banjos, accordions and mandolins. What's even more unique than the band's sound is the members' ability to assume various roles, switching instruments during live shows in random rotation. 
Their debut album Sigh No More was released in the States earlier this year following its release in the UK last fall. Visit their site and give their music a listen. My favorites? "Little Lion Man" and "The Cave."
