Finally, the Tracker software is becoming more feature complete. By now, I have

• multiple patterns (A-Z)
• pattern chaining = song mode (a song is a sequence of patterns, and can be looped)
• load & save
• MIDI real time tracking via MIDI IN socket from a MIDI keyboard
• real time tracking from the TRS-80 keyboard
• quantization
• some pattern tools (e.g., the ability to copy patterns)
• etc.