Jesse McCartney is an American actor and singer. He joined the cast of the TV drama Summerland and played Theodore in the 2007 big-screen reboot of Alvin and the Chipmunks and its sequels. McCartney has also appeared in films such as Chernobyl Diaries, Keith, Pixie Hollow Games, Big Trip 2: Special Delivery, and Expecting Amish. On the music front, he was a member of the boy band Dream Street and has released the multiple solo albums, as well as the singles Beautiful Soul, Leavin', and How Do You Sleep?.