Java does not playback the notes properly so... MUST DOWNLOAD TO WORK! Click the keys to make music. Move the sliders to change volume, note length and playback speed. Use the arrow keys to move the note cursor. Press spacebar to begin playback mode, press Q to end. Press A to move the note cursor and playback cursor to the beginning. Pressing B adds a blank note (erase/pause) W clears the notes. The playback speed slider only adds delay between each note. This is for really fast computers or if you just want the notes to play slower. William Yap tools.