The music pattern (displayed in the editor in the lower half of the screen) is made up of six columns, corresponding to each of the six voices provided by the emulated MockingboardвЂ™s two AY-3-8910 synthesiser chips. The current octave is indicated in the state pane in the upper-left. To change the вЂrootвЂ™ octave of the keyboard, you can press shift-up and shift-down while the cursor is inside the pattern editor. When the cursor is in the pattern viewer / editor, notes are entered using the computer keyboard, with the first two rows corresponding to the upper musical scale, and the second two rows corresponding to the lower scale. You can move from one area to the other (excluding the state pane, which is not editable) using the Tab key. The tracker is arranged into 4 main areas: The pattern viewer / editor, at the bottom the instrument view / editor at the top-right the state pane at the top left and the song arrangement in the vertical centre. You open microTracker by selecting it in the Tools sub-menu inside of the microM8 вЂDiskвЂ™ menu, which will appear if you move the mouse toward the top-left corner of the microM8 window and click on the green floppy disk icon. Inside microM8, you can also use microTracker songs with microBASIC and with microPAK files.

The engine will sit in the background, and will wait until called upon, at which point it will play back an effect and then go back to waiting. MicroTracker and its playback engine can also be used to create sound effects and fanfares that can be triggered during games. Music composed with microTracker can be played back inside the emulator (or on real hardware) using a companion IRQ-based playback engine, which is provided when a song is exported, or can be compiled from the source available from the Paleotronic website. MicroTracker is a music tracker built into microM8 that allows for the creation of similar music, initially for the 6-channel Mockingboard sound card on the Apple II, which microM8 supports. Rather than just storing a timed stream of musical information (such as that sent over MIDI), trackers organised music into patterns that could be ordered and repeated, thus reducing the overall memory used for the music (which was at a premium in the computers of the day.) Music trackers were a common way in the 1980s and 90s of scoring music for computer games.

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