both of us

I loved B.O.B.'s airplanes (with Hayley Williams) at the time, but that could have been a one-off. Now he's done it again, with Taylor Swift:

Oh, and price tag, with Jessie J, was good too. So, conclusion (and memo to Shakira) B.O.B. is the man to duet with ... seems a much nicer guy than that pitbull person.