Thanks :)
Music is most definitely comming in a next version, but we didn't have the time to implement sounds and music.
For the tutorial, one of our playtesters almost never plays games, so we tried to make it as simple as possible so no initial knowledge is required. However in a next version we might add a "speedrun" mode: if you go fast enough, you go faster to the next level, and the pop-ups disappear more quickly. This way if you understand the tutorial, it should be faster, but if you need it, it's there.