In case you are somehow not aware, "Rock Band" is a game for tweens and young adults in which people sit on a couch and pretend they are in a band with fake instruments. Sometimes adults play this game, but usually after a few cocktails at 3 am. In this case, however, everyone looks a bit on the sober side and the sun's shining bright. Look who's on lead vocals, wooing the ladies with his sweet melodies to "Rock You Like a Hurricane."
Sidenote: Usually people "un-tag" photos when the camera catches them blinking. This is where MZ differs from the average human.
Let's hear that guitar solo, Zuck!