BOB featuring Hayley Williams. Airplanes acapella
Here is the acapella for Airplanes by BOB ft Hayley Williams. I'm sure you'll agree, there are some really great vocals on this track.
You can download this acapella here http://www.4shared.com/audio/L2fU2V-2/Acapella_BOB_Ft_Hayley_William.html