It's all too easy to just focus on Andrew Bird's skill as a whistler when talking about his music, but it's pretty hard not to given this incredible performance of "Fitz & Dizzyspells" on Letterman two nights ago. Bird whistles and bangs on a guitar like a whirlwind throughout the performance, impressing everyone in attendance (even Paul).

"Fitz & Dizzyspells" is on Bird's recently released Noble Beast. [via Stereogum]