Sleigh Bells became a festival-crushing live act on the strength of just two people — or, more precisely, in the strength of Alexis Krauss’s obliterating charisma. So it’s a bit shocking to see the duo with a ton of other people onstage. Last night, Sleigh Bells were the musical guests on Jimmy Kimmel Live, where they performed the title track of their new album Bitter Rivals. They also did album track “Tiger Kit” as an online bonus. And for both songs, they had help: A drummer, three backup singers, a three-person horn section. I’ll leave it up to you to decide if the extra personnel added anything; the two performances are below.

Bitter Rivals is out now on Mom + Pop.