Fun. stopped by ‘Jimmy Kimmel Live’ with a brass ensemble last night (June 4) to perform ‘One Foot,’ the ninth track off their February release, ‘Some Nights.’ The band also treated viewers to a performance of their single ‘We Are Young,’ which has become a huge hit since it started climbing the charts in December.

The group kicked off their busy month on Sunday night in the West Coast with a performance featuring Janelle Monae at the MTV Movie Awards.  Sooner after, the video for their new single ‘Some Nights’ debuted.

Fun. will be touring extensively throughout the summer. They just hit the road for a month long North American tour with Minnesota pop band Now, Now. This tour will run though June 29 in Milwaukee. The band plans to hit the U.K. for a month long tour in July and will return to the United States for the month of August. They also plan on stopping by the ‘Today’ show on June 21 and ‘Late Night With Jimmy Fallon’ on June 22.

Watch fun. perform 'One Foot' on 'Jimmy Kimmel Live'

Watch fun. perform 'We Are Young' on 'Jimmy Kimmel Live'