Fishtail

Generative MIDI & Intonation

Only for Mac

$14.99

Mac

Create complete, repeatable musical takes with exact pitch references, alternative intonation, Ableton Link, MPE and seven separately routable voices. Fishtail is a generative MIDI instrument and composition system for Mac. It creates complete, repeatable musical takes from a compact arrangement, then performs them through software instruments in Logic Pro, other compatible AUv3 MIDI hosts, or eight named standalone CoreMIDI sources. COMPOSE WITH FORM Build sections with key, mode, meter, cadence, musical role, treatment, expression and Bloom controls. Shape the whole piece with gentle D4 or wide D20 generation. Keep generated takes, return to an earlier take and choose the play order. TUNE FROM AN EXACT REFERENCE Set an exact pitch reference—including C4 = 256 Hz—and choose Equal Temperament, Just Major, Just Minor, Pythagorean, Werckmeister III or Fishtail's experimental intonation models. PLAY POLYPHONIC ALTERNATIVE INTONATION Choose normal 12-ET MIDI, global pitch bend, per-part pitch bend or MPE pitch bend. In Logic Pro, Fishtail can send seven fixed voices on MIDI channels 1–7, so Bass, Tenor, Alto, Soprano, Bloom Bass, Bloom Octave and Shimmer can each have their own instrument, effects, pan and fader. SWIM BETWEEN MAC APPS The standalone app publishes eight clearly named CoreMIDI sources: one combined source plus seven separate parts. It can publish 24 PPQN MIDI Clock and Start/Stop on the combined source, with timestamped scheduling tied to the audio render timeline. CoreMIDI publishing is on by default and can be turned off in Standalone Settings. WORK WITH YOUR HOST Join an Ableton Link session for shared tempo, beat, phase and optional start/stop. Save and reopen Fishtail project documents or host projects with Fishtail's applied tuning, MIDI output mode, Live MIDI Route and playback Rate restored. Export MIDI plus supported tuning and analogue-CV materials. Fishtail is a composition instrument, not a sound source. Load Fishtail in the Instrument slot of a software-instrument track and route its MIDI output to one or more receiving instruments, or route the standalone CoreMIDI sources into another Mac instrument. Requirements: macOS 14 or later. Universal support for Apple silicon and Intel Macs. Artwork by Ocular Debris.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Fishtail now includes time signatures in exported MIDI files, so changing meters appear correctly in DAWs such as Logic Pro. It also restores validated legacy Takes that were previously playable but hidden from the Take Shelf, allowing them to be selected and exported.

Version 1.0.1

The developer, AMY NICOLA MCBRIDE, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • AMY NICOLA MCBRIDE
    Size
    • 18.9 MB
    Category
    • Music
    Compatibility
    Requires macOS 14.0 or later.
    • Mac
      Requires macOS 14.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Amy McBride
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

    More by AMY NICOLA MCBRIDE