Nice! I liked the sound design :)
Only constructive criticism I can give is that I found it hard to tell if a raindrop was in front of or behind me.
This led me to sometimes walk over the top of raindrops without noticing that I'd passed it.
Maybe an audio cue when you can place a drum would have fixed this, or some other audio adjustments to help indicate when a sound is coming from behind your head.
Just my personal experience though. And it's not a big deal with something short and sweet like this.