Base keys are DFJK, they can be changed using the "binds" button What the buttons do (1st button is explained in notes and credits): The 2nd button down allows you to change your keybinds The 3rd button down is your arrow skin The 4th button down is the transparency of the lane behind the notes The 5th button down is the color set The 6th button down is the note speed
The top button that says frames/key just shows your activation/deactivation. Frames means that it will repeatedly spawn a note after the number of frames shown has passed, unless the keys are no longer pressed. 0 frames causes a 0 second wait time, while setting the frame rate is based off of 30FPS. Key means it will wait until the keybind is not pressed before allowing you to press it again to spawn another note.