Same thing happened to me... Heard it in a store and googled it... And fell in love with the song! I wish this version was available on ITunes .... It is the one I love "the most"!
If I were an artist I don't think I'd allow my songs to be in commercials. It's a risky move. It's the first time I listen to it, and so... I love this song. But if I heard it on a commercial, depending on what the commercial was about, even...I'd probably be hatin'. Lucky me. :D