Who sings "im not going to write u a love song"?

who sings it?? this song was in a tv commerical

Love Song by Sara Bareilles

"...I'm not gonna write you a love song because want one, it's because you need it..."

Yep. Sara Bareilles, and the whole cd "Little Voices" is absolutely fantastic. Definitely worth the buy! If you like that song, listen to "Love on the Rocks" by her too...