Kristen Bell sang Frozen live at Coors Field this weekend and the internet is stunned she can actually sing. The guy dueting with her is the better story. He's a Tony-nominated Broadway star that a baseball team recruited in December. To pitch. The Savannah Bananas scouted Derek Klena after his runs in Jagged Little Pill, Moulin Rouge, and Wicked. He throws real innings, then sings Phantom of the Opera between them at Yankee Stadium. The Bell duet was a full production with a headset mic,…