Who sings the song in the US cellular Shadow puppets commercial?

It is in the same style as the Bernadette Peters and Steve Martin version in "The Jerk." But the one on the US Cellular commercial is a little different and is missing the waves in the background. It sounds very close to the version by MJ O'Sullivan on his album "All I Need Is This Guitar (that's all I need)" (an obvious tip of the hat to Steve and Bernadette). It's available on iTunes, Amazon, etc.