Glad you asked because I love that song. It's a beautiful, moving song from Bright Eyes called "First Day Of My Life".

It's been used in several commercial arenas but the latest is a cute commercial for the real estate website

I make fun of Nebraska all the time but one of the best things to come out of that state besides delicious corn is Connor Oberst. One of his many projects over the years has been Bright Eyes. Enjoy.