This is a some guys dancing because they're doing some disco dancing!
They're dancing to "Baby You're a Firework!"
Because they're groovy dudes! And you can see the little color-shower on the little upside-down L thing (and there is a little hidden Lego game dude from meteor strike, but you have to look very very close to see him.)
The one with the blue speakers (where the little guy is hidden) is see through and pretty cool.
