This project is a drum machine with 18 different drums and cymbals. You can change the tempo with the slider in the top left corner, and it will automatically run at that tempo. To write a track, first click "edit" on an instrument you want to play in that track, and click to fill in the beats on which you want that instrument to play. You can hold space and click filled cells to erase them. When you are done editing an instrument, press "Done" and move on to the next instrument until your track is done. Press clear to clear all cells. Amount used adjusts the amount of the possible bar used.