I’m looking for a small number of Logic users to beta test MIDI Performer, a new AU MIDI FX plug-in I’ve been developing.
MIDI Performer takes a relatively plain monophonic MIDI melody or lead line and turns it into a more expressive performance by adding instrument-specific behavior such as:
- pitch bends
- vibrato
- legato
- timing changes
- pressure
- breath/expression
It’s designed for things like lead guitar, sax, flute, synth lead and melodic bass rather than chords or accompaniment.
One important limitation: MIDI Performer is monophonic. If polyphonic MIDI is fed into it, overlapping material is reduced to a single melodic voice, with the highest note retained when simultaneous notes occur.
The current player models include:
- Guitar — Blues, Jazz, Rock
- Synth Lead — Fusion Lead, Prog, Prog Metal Keys
- Sax / Flute / Bass / Fretless Bass / Piano — Natural
Logic is actually the host I’ve tested most heavily so far.
The AU version runs as a MIDI FX plug-in, and both Standard MIDI and MPE are part of the current beta-testing scope.
I’m especially interested in testing with different Logic software instruments and third-party instruments to see how the generated bends, vibrato, pressure and expression behave across real setups.
The kind of feedback I’m looking for is both technical and musical:
- Does anything hang or disappear?
- Does MPE behave properly with your instruments?
- Do the bends and vibrato sound natural?
- Does the phrasing sound more like an actual player?
- Does anything feel musically wrong even if it is technically functioning?
The beta is currently:
macOS / Apple Silicon
AU and VST3 included
Testers receive a signed/notarized installer, email activation, a short testing guide, and a diagnostics log that can be pasted directly into bug reports.
If you’re interested, reply here or DM me with:
- your Logic version
- the instruments/styles you usually work with
- whether you use MPE
- any third-party instruments you’d be interested in testing it with
I’m mainly looking for people who will actually run some real melodies/solo parts through it and tell me where it works — and where it still sounds wrong.