I'm pretty sure it's "happy" or "glad" or "good to be in love with you" or "my best friend." It's part of the chorus I know that for sure and the song is sung by a woman and when she sings "in" the note is much higher than the rest. Its a jazz/pop song. I heard it playing the other day and I can't figure out the rest of the song and it's driving me crazy because it's an awesome song and I really want to download the cd. It's not frou frou and she has a higher voice and sounds somewhat like Sara Barreilles.