Use WASD to control the red masher, and ARROWS to control the blue masher. You have to match the pointed circle with the correct masher. ex: Red beat with left arrow can only be hit by the left, red masher. This is just a test/engine I've come up with, I wanted to see what I could do with this. There is a gradual difficulty spike because of this. I wanted to choose the worst song for this demonstration, so I chose "This is working" from Bob's Burgers.