A platform* game. As the background music plays, a cavalcade of blue shapes and symbols will appear, loosely in time to the rhythm. Your goal is to collect as many of them as you can with the cursor. Special yellow shapes make your cursor grow (happy!), while red shapes make it shrink (sad!). The rare purple shape gives you temporary purple vacuuming power (super joy!). New to Music Catch 2 is the rainbow shape, which turns every on-screen shape to yellow, presumably because there is gold at the end of rainbows. Which I can vouch for, by the way; sometimes you have to dig. Good luck.
*NOTE to Mods and Admins: I'm not quite sure how to categorize this game.