Line Music - but this time it's playable! You can play an octave of notes with ten different instruments, and customizable settings! To play, you can use the keys W,E,R,T,Y,U,I,O,P and/or S,D,F,G,H,J,K, and L. The default key is F♯,C♯, but you can change that by pressing N to make it F♮ C♮ and M to change it back. You can change the tempo by holding ↓ to make it faster and ↑ to make it slower. You can also change the length of the note by holding ← or →. To change the instrument, press any number key to pick a different one!