transpose

transpose shifts every note by a fixed number of semitones.

Alone it is a transposition; inside a fork it is an interval machine. A branch with transpose 12 doubles in octaves, transpose 7 shadows you in fifths, and stacking branches builds organ-style registrations from a single keyboard. Notes shifted past either end of the MIDI range (0 to 127) are dropped rather than folded back.

Parameters

transpose takes one bare argument, not a named property.

Parameter	Type	Default	Range
semitones	integer argument	required	-127..=127

Example

miditool.kdl

input "Roland"
output virtual="miditool Out"

transpose -12       // play everything an octave lower

Try this

A drone of open fifths under everything you play:

fork {
    pass
    transpose 7
    transpose -12
}

The fork merge drops exact duplicates, so pedal and mod-wheel traffic still comes through once, not three times.