This is a beutiful duett preformed by Robert Downey Jr. and Vonda Shepard. I couldn't find a tab myself so I made one for you all. It's very easy. Verse: C, Am, F, C C, Am, Em, F, G (Listen to the song to understand the F and G chords) Bridge: Dm, C, Dm, G, F, G (Same here , listen to the song to hear the F and G chords) Enjoy!
