I'm not going in after him. There's no telling where this vortex lets out. We should experiment with it until we know what rules the piano operates under. First thing's first: do the keys control the vortex? *presses a key. The portal changes color* Yes. Apparently. Second: do the keys have predictable effects? *presses the same key. The color change reverses. Repeats the process twice* Yes. At least, this one does.