Twelve Extensions for Ableton Live 12 Suite, covering every stage of a MIDI production workflow. Generate original material from scratch with Phrase Terrain, bundle-exclusive Rhythmism, and Primer. Creatively transform existing clips with Iterator, Ornamenter, Refractor, and Antivoid. Build arrangments from scratch with Scaffold, then evolve and refine compositional structure with Lattice and Transit. Pull real-world datasets into MIDI with Data Map. Explore device parameters systematically with Variform. Each Extension operates directly from Live's right-click context menu, writing output as editable MIDI clips in a single undo step.