Resonance is a musical platform puzzle game originally created during the Global Game Jam in 2010 in the Netherlands, where it won both the audience award and the jury 1st prize.
The goal in the game is to collect and play notes to resonate the blocks and alter the level.
Walk around with the arrow keys. Play notes with 1, 2, 3 and 4 (when collected)
Earlier this year Resonance came to iOS (for free).