Last week, I wrote about this fun, clever song "YouTube (A Love Song)" posted by David Choi on YouTube (obviously). I'm normally not a fan of watching webcam videos of people singing and/or lip synching, but I thought it was pretty catchy. I went back to listen to the song again, and noticed a ton of responses to David's video. It's a hit! But I was particularly taken by this harmony sing-a-long, by this girl who's got one hell of a voice: Youtube(a love song) David Choi. ft. Ailee. It also helps that she's enormously cute. A look at her other videos and some searching revealed that she's a professional singer, or at least trying to be. Here's Ailee's MySpace.