Hi, glad you liked the game and thanks for taking the time to give feedback :)
I'm not sure I fully understand what you mean, would you mind clarifying a couple of things?
What do you mean by key track? Do you mean the rhythm game for every instrument or do you mean a specific keyboard instrument in the game? Also I'm not sure what you mean end in the hitbox? Do you mean that the track keeps loops so the end of the track is also the start of the track?
Thanks~
