Polix-P - Live Polyphonic MIDI Performer

Polix-P beta

Read the user guide

Live Polyphonic MIDI Performer

Windows install help

Windows may ask before running a new installer.

ISOREK installers are signed, but Microsoft Defender SmartScreen can still show a warning while a new publisher and Azure-signed certificate build reputation in Microsoft's systems.

The installer is still protected by code signing. The warning mostly means ISOREK is new in the software market.

Windows protected your PC SmartScreen warning with the More info link
1. Select More info.
Expanded Windows protected your PC SmartScreen warning showing the Run anyway button
2. Confirm the app and publisher, then select Run anyway.
Example User Account Control dialog showing a verified publisher
User Account Control should show the verified publisher.
Read Microsoft's SmartScreen reputation explanation

Polix-P is in beta. The functionality is in place, while the interface and overall user experience are still being refined. It turns held MIDI chords or a chosen scale into complete polyphonic performances without starting from a blank piano roll. Choose an authored piano, arpeggio, ostinato, bass, melody, guitar, pad, or game-inspired performance, arrange it into editable Patterns and Sections, then play it live or export the result as MIDI.

  • Follow held MIDI Chords or perform autonomously from a selected Scale
  • Play up to eight simultaneous authored voices with preserved overlaps and sustain
  • Build song Sections from ordered editable Pattern sequences
  • Choose from 47 original performances across nine musical families
  • Edit polyphonic performances and export complete Sections as Standard MIDI Files
  • Edit complete projects through strict JSON and Isorek MCP