Amazing.
Pretty damn fun and just wondrous to watch, though it suffers from a lack of instructions at first.
Not sure how I feel about the pitfalls considering it's all water and I'm a buoyant tugboat, either.
Does the position of the raindrops change based on the specific note of the song? Or do they just fall whenever a particular note is played? I kept trying to guess where the next drop would hit by a lower or higher pitch, and I kept failing, so I'm guessing no.