Thank you. :)
Regarding the diffculty: Agreed. I cannot play the song flawlessly myself so far, my best score is 22900. ;) I pretty much underestimated the amount of work it required to get the music done, chopped up, and synched to the gameplay, so I couldn't balance it very much. :)
But I'm glad that you think the controls are alright, as that was my biggest fear, especially for a rhythm game. :D