I didn't think I would see a rhythm game in a jam. Awesome!
The art is gorgeous, and I loved the fact that you had different songs for the different difficulties. So well done!
I couldn't beat even the easiest of difficulties tho, so I would appreciate some breathing room to be able to recover from mistakes. I am thinking of maybe making the marmots get more points the longer they are on the surface, to incentivize going further without making mistakes and being able to recover with a good enough combo.
Also, another control layout that mimics the physical positions of the marmots on screen would have helped, and/or using color as well to mentally bind the keys and the marmots' positions better. But rhythm games are notorious for being difficult to get right, even more so for a jam!
Overall a fun experience with catchy music, thanks for sharing it!