Jimmy Kimmel Live, currently right in the middle of a week of shows filmed in Brooklyn, had a big night last night, welcoming Bernie Sanders as a guest and bringing in Michael J. Fox to talk about Back To The Future on the movie’s big viral day. And it also featured Big Grams, the duo of Big Boi and Phantogram, who released their first EP as a group last month. On the show proper, the group performed “Drum Machine,” with a whole crew of young Brooklyn marching-band drummers — the Brooklyn Express Drum Line — helping them out. And as an online bonus, they also did the EP track “Goldmine Junkie.” These guys are continuing to gel as a live act, and these performances sure seem to indicate that they’ll be polished and ready when festival season rolls around next year. Watch both performances below.

The Big Grams EP is out now on Epic.