I know the game is called chords but listening to sine waves meshing can be a little jarring. Perhaps they could be parts of jingle or short musical sequence? Either way the audio lends very little to the game. Its mostly a puzzle game where you collect items (in this case, notes) to complete the level. Perhaps using w,a,s and d to determine direction and making the block auto-move to the beat of the music? The controls made sense but doing it manually took too long. The game has potential but it's still pretty rough in design.