The band is the Sleigh Bells, and the song is called Rill Rill. Apple used it in a commercial.

It is based, and heavily so, on a sample from this…

…which is Can You Get To That from Funkadelic’s 1971 album Maggot Brain.

We now play a game. Answer this question in the Comment Section: How much money did the writers of Can You Get To That make from the success of Rill Rill?