MIDI : MIDI Editing : Real-Time Properties Settings : Transpose

Transpose
Transpose lets you transpose MIDI notes up or down by a specified number of octaves and semitones, or in key by scale steps (based on the Key Signature ruler). You can also transpose to a specified pitch. Select By, To, or In from the Transpose pop-up menu to transpose by an interval, to a specific pitch, or in key by scale steps.
To transpose by an interval, enter the number of octaves and semitones as a positive or negative numbers.
To transpose to a specific pitch, enter the MIDI note name.
To transpose in key by scale steps, enter the number of steps as a positive or negative numbers. For example, enter +2 to transpose up by thirds in key (a unison plus a second equals a third).
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Transpose can be applied as a Real-Time Property to MIDI Input and Thru on record-enabled MIDI and Instrument tracks.