A song used in a T.V. commercial???

There's this pop alternative rock song, which I'm looking for, and it is played in one of the 'Beaches Resorts' commercials; I'm pretty sure that it's a 'top-forty' hit song, and although some of the lyrics are actually performed in the commercial, the one distictive thing about the song, is in the melody. At the beginning, during the main melody, and part of the background, is what sounds like an ensemble, multi-voiced rendering of "....hip, hip!.......hip, hip!....". Hopefully, this will be enough for someone to assist me in identifying this song; any ideas, anyone???