The core idea is simple: slam your spacebar on the 7th beat. But every level has a twist on that concept. In the trailer above, a virus is messing up your connection, leading to glitchstep music, and you have to keep the count to 7 in your head. Further twists include having you master things like polyrhythms, offbeats, hemiolas, irregular time signatures.. and if those don't mean much to you, don't worry - its designed to make you learn music and rhythm theory without even realising it.