This game is great XD
The difficulty adjustment between the 1st song and the 2nd is good too.
I also enjoyed both of the songs. XD
But, it's difficult to see which color gave the best in the gauge meter. Maybe you can add number like 300,200,50, etc. Using Perfect, Good, Bad, Miss also works. Using different color without telling which one is the best is kinda confusing for me. My guess is green is Perfect, Blue is Good, Red is Bad and Cross is Miss(?)