This is certainly a unique concept. The controls work really well, but it just feels a little weird to be managing a slider with one hand and platforming with the other. Larger slider fields would definitely help. The bouncy slider was my least favorite and caused the majority of frustrations - including almost quitting until I saw the description mentioning to try sliding things. Maybe that could be worked more organically into the game and intro levels?
Negatives aside, I really enjoyed this. This immediately got design ideas churning for more platforms and integrating different soundtracks for different levels. This could be a really cool full experience. I liked it a lot. Super well done and nicely polished for just two days. Incredible!