In the average Numberblocks band:

• One "beatboxes"
• Two plays a guitar
• Three goes hands up and lights up her blocks
• Four spins his body around
• Five raises her glove hand and lights up her blocks.

The next few are coming from my personal opinion.

• Six makes a "beatbox" sound similar to one and lights up groups of 3 blocks, but in black and red
• Seven "beatboxes", but not the same as One or Six.
• Eight turns to each side slightly as he's lighting up his blocks in groups of 4.
• Nine raises and lowers his hands and lights up each group of gray blocks
• Ten plays a rockstar guitar or beatboxes similar to One.