I have used pen and it will draw to a random section in a random colour. The arrow is to help you just incase you've lost it. P.S: You can tap it to also go to the next stage, but try not to. I also used music blocks to create my own music. Turn of your sound if you don't want to hear, it but I will make a button to turn it off incase you are listening to other music.
@Goldstar6 (me) GoldStar6 I thought of this myself, although this is definitely not the best project I have made. I have re-shared this, but I might unshare it again soon...