After playing KROQ's 'Almost Acoustic Christmas' a couple of days ago, Alt-J stopped by 'Jimmy Kimmel Live!' last night (Dec. 15) to play not one, but two tracks off their latest effort, 'This Is All Yours.'

Packing the lot outside the late night shows studio, the guys performed 'Left Hand Free' (above) and 'Every Other Freckle' (below). While the Leeds-based band looked pretty relaxed onstage, it was clear that the audience ate the performance up and loved every minute of it.

Aside from sold-out performances, Alt-J are also celebrating the fact that 'This Is All Yours' has been nominated for a Grammy in the Best Alternative Album category.

Alt-J are finishing their year with a performance at the Crystal Ballroom in Portland, Ore., tonight (Dec. 16) and will be playing the Falls Festival in Australia on Dec. 30 and Dec. 31. (They will also be ringing in 2015 with more Australian dates.) Get their full tour itinerary here.

Watch Alt-J Perform 'Every Other Freckle' On 'Jimmy Kimmel Live!'