I really, really loved the game! It really got me in competitive mode, trying to complete the songs in the hardest modes and I think my favorite is proper rhythm because it is so funky!
My biggest issue with the game is the optimization :( I know it's hard to do but the GPU usage is like, 98% on my desktop and it lags on hard songs if I have anything at all open while playing it. To compare, a hard song in this game is almost as GPU intensive as when I run Doom Eternal! (2GB Graphics Card)
Also, it took me a while to find out there are more difficulty settings! The menus look amazing but I think sometimes that came to the detriment of the UX - It's hard to intuitively know what direction to press to navigate and that made me think for a good while that there were only the begginer songs in the arcade mix and a friend of mine who had already put the game down only found out about it after I told him as well.
With all that said, the love and care put into this game really shows. It's amazing and I can't wait to play the full game and listen to the songs on spotify :)