It's his character, Caleb, and mine, Lance, playing and lip-syncing to some of their favorite songs as cubs. Yes, that's a plastic toy microphone.
For those of you who don't know, Lance Wildfyre, my FBA character (See buckhopper for more details) and Caleb Chen (I think that's his last name) grew up right down the street from each other. When it was deemed that Lance's foster parents were unfit to care for him and his brother, Lance moved into Caleb's house until his brother could claim legal guardianship over him.