Scoring in Parts

{

Scores are layed out in a parts array. Each part object has a stave, transpose, and a routing map that maps instrument ids to voices.

"parts": [
    { "name": "Trumpet",   "stave": "treble", "transpose": 2,  "routing": { "2": 0 }},  // Route instrument 2 to part voice 0
    { "name": "Alto sax",  "stave": "treble", "transpose": 9,  "routing": { "3": 0 }},  // Route instrument 3 to part voice 0
    { "name": "Tenor sax", "stave": "treble", "transpose": 14, "routing": { "4": 0 }},  // Route instrument 4 to part voice 0
    { "name": "Bass",      "stave": "bass",   "transpose": 12, "routing": { "6": 0 }}   // Route instrument 6 to part voice 0
],

Sequences are cued on instruments by sequence events, which identify a sequence id, an instrument id, and a duration in beats to play for.

"events": [
    [0, "sequence", 1, 6, 16],  // Send sequence 1 to instrument 6
    [4, "sequence", 2, 1, 12],  // Send sequence 2 to instrument 2
    [4, "sequence", 3, 2, 12],  // Send sequence 2 to instrument 3
    [4, "sequence", 4, 3, 12]   // Send sequence 2 to instrument 4
],

"sequences": [...]

The same sequences and instruments can be mapped to voices on a grand staff by replacing the parts array.

"parts": [
    { "name": "Horns/Bass", "stave": "grand", "routing": { "2": 3 "3": 4 "4": 5 "6": 6 }}
]

Automatic Parts

When a part omits explicit "staff" and "transpose" properties, Scribe inspects the part's "name" and applies standard orchestral presets: Trumpet resolves to treble (+2 semitones), Alto sax to treble (+9), Tenor sax to treble (+14), Trombone to bass (concert pitch), and Bass to bass (+12 for double-bass sounding an octave below written).