The Transposer MIDI plug-in can transpose incoming MIDI notes in real time and can correct notes to a selected scale.
Transpose slider: Transpose incoming MIDI Notes by ± 24 semitones.
Root pop-up menu: Choose the root note for the scale.
Scale pop-up menu: Choose one of several preset scales or create your own custom scale (User) with the onscreen keyboard.
Keyboard: Click notes to turn them on or off. Notes that are turned off are excluded from the User scale.