Karmin parlayed their YouTube success into a deal with L.A. Reid at Epic Records and released their EP Hello last year. Now the Boston-based duo of Amy Heidemann and Nick Noonan goes solo on “Acapella,” the first single off their full-length debut.

Over a booming bass line, produced by Martin Johnson (Boys Like Girls), Amy raps about finding Mr. Right and realizing he wasn’t so perfect after all.

“‘Acapella’ was created almost exclusively with human voices,” says Amy. “We flipped the original meaning of the word ‘acapella’ to mean ‘D.I.Y.,’ or should we say ‘D.I.A. – Do It Acapella!'”

They recorded 25-30 songs for their Epic debut, which is due this later this summer. They will also hit the road with the Jonas Brothers starting July 10 in Chicago.

Listen to Karmin’s sassy kiss-off anthem below.