YouTube

Yahoo Answers — you probably know the site if you've ever asked Google a question — is based on an optimistic, even democratic conceit: Somebody out there knows the answer to your query. But there's a reason that we turn to "experts." On Wednesday night's Tonight Show, Jimmy Fallon grants a viewer's oddball request to have some of these crowdsourced answers to real questions sung by a professional singer. Broadway star Audra McDonald is up to the challenge. Fallon's lounge act isn't at the same level as his other musical endeavors, but why quibble with a fine idea? --Peter Weber