Execute midi operations. Each op string follows: VERB TARGET [key:value ...] Call midi_help for the full reference card.

MUSIC: note TRACK PITCH at:POS dur:DUR [vel:V] [ch:N] chord TRACK SYMBOL at:POS dur:DUR [vel:V] [ch:N] track add|remove NAME [instrument:INST] [program:N] [ch:N] [bank:MSB[.LSB]] cc TRACK CC_NAME VALUE at:POS [ch:N] bend TRACK VALUE at:POS [ch:N] tracker TRACK import at:POS [res:RES] ... tracker end

STATE: mute TRACK solo TRACK program TRACK INSTRUMENT|program:N [at:POS] [bank:MSB[.LSB]]

META: tempo BPM [at:POS] time-sig N/D [at:POS] key-sig KEY-MODE [at:POS] marker TEXT at:POS title TEXT

EDITING: remove SELECTORS move SELECTORS to:POS copy SELECTORS to:POS transpose SELECTORS SEMITONES velocity SELECTORS DELTA quantize SELECTORS grid:DUR modify SELECTORS [pitch:P] [vel:V] [dur:D] [at:POS] [ch:N] repeat SELECTORS [to:POS] count:N crescendo SELECTORS from:VEL to:VEL decrescendo SELECTORS from:VEL to:VEL

SELECTORS: @track:NAME @channel:N @range:M.B-M.B @pitch:PITCH @velocity:N-M @all @recent @recent:N @not:TYPE:VALUE Combine to intersect: @track:Piano @range:1.1-4.4

POSITION: M.B (1.1 = start) M.B.T (tick offset) tick:N +DUR -DUR end

DURATION: whole, half, quarter, eighth, sixteenth, 32nd 1n, 2n, 4n, 8n, 16n, 32n dotted-quarter, triplet-eighth, ticks:N

PITCH: C4, D#5, Bb3 (note+accidental+octave) midi:60 (raw MIDI number)

CHORDS: Cmaj, Am, Dm7, G7, Bdim, Faug, Csus4, Asus2 Cmaj7, Am7, Dm7b5, G9, Cm6, Cadd9, Dm/F (slash)

VELOCITY: 0-127 (numeric) ppp, pp, p, mp, mf, f, ff, fff (dynamic names)

CC NAMES: volume, pan, modulation, expression, sustain, reverb, chorus, brightness, portamento, breath

GM INSTRUMENTS (EXAMPLES): acoustic-grand-piano, electric-piano-1, vibraphone acoustic-guitar-nylon, electric-bass-finger, violin trumpet, alto-sax, flute, string-ensemble-1 program:N (raw 0-127) bank:MSB[.LSB]

RESPONSE PREFIXES:

• note/chord added ~ event modified

• track modified - event removed ! meta event @ bulk operation

CONVENTIONS:

• Positions are 1-based: measure 1, beat 1 = 1.1

  • Channels are 1-indexed user-facing (ch:1 through ch:16)

  • Channel 10 is drums (GM standard)

  • Track names are unique identifiers

  • Batch multiple ops in one call for efficiency

  • Call midi_help after context truncation for full reference

Query midi state.

Session: 'new "Title"', 'open ./file', 'save', 'checkpoint v1', 'undo', 'redo'

Returns the midi reference card with all syntax.