In the video, Sam and Mark are playing to Chainbreaker by Charlie Hall, Sam's favorite song. The video quality isn't very good so you can't hear the bass drum well, but you can hear Sam's transitions into different parts of the song. He's quite the little drummer.... we're so proud. :) Oh, and he just started playing the bass drum a few weeks ago.
Sorry it's such a long video. I'm sure it's more interesting if you know the song pretty well.
