music/complete_tracks/cards/HF_MT_02_EXPLORATION_TRAVERSAL.json
{
"card_id": "HF_MT_02_EXPLORATION_TRAVERSAL",
"cue_role": "exploration_traversal",
"cue_class": "block_shuffle_field",
"working_title": "The Road Between",
"chapters_served": [
"CH_02",
"CH_03",
"CH_05",
"CH_06",
"CH_08",
"CH_10",
"CH_11"
],
"target_duration_s": 188,
"loop_class": "phrase_pool",
"in_game_loop_span_s": 188,
"bpm": 92,
"tempo_band": "T3_walking",
"key": "G mixolydian",
"modal_colour": "Mixolydian; the flat-7 is the travel colour and never resolves upward",
"instrumentation_family": "strings_and_winds_chamber",
"instrumentation": [
"solo clarinet",
"solo oboe",
"flute",
"bassoon",
"violin ens (quiet)",
"viola ens",
"cello ens",
"contrabass",
"harp"
],
"voice_count_target": 9,
"energy_class": "E04_open_warm",
"dynamic_range_target_db": 18,
"total_bars": 96,
"form": [
{
"label": "A_block_1",
"bars": 8,
"function": "head statement, clarinet"
},
{
"label": "A_block_2",
"bars": 8,
"function": "same head, oboe -- call-and-response across two timbres (PHRASE-03)"
},
{
"label": "B_block_1",
"bars": 8,
"function": "continuation, bass reverses direction of travel (PHRASE-06)"
},
{
"label": "B_block_2",
"bars": 8,
"function": "continuation variant, counter-line added"
},
{
"label": "C_block_1",
"bars": 8,
"function": "relative-minor block; the road turns"
},
{
"label": "C_block_2",
"bars": 8,
"function": "same, strings only -- the break (LOOP-05)"
},
{
"label": "D_block_1",
"bars": 8,
"function": "return block, harp arpeggiation under the head"
},
{
"label": "D_block_2",
"bars": 8,
"function": "exit block, half cadence into any other block"
},
{
"label": "E_block_1",
"bars": 8,
"function": "high-altitude block, flute leads, no low strings"
},
{
"label": "E_block_2",
"bars": 8,
"function": "night block, the head at half density in the bassoon"
},
{
"label": "state_calm",
"bars": 8,
"function": "idle variant: the head at half density, no bass"
},
{
"label": "state_threat",
"bars": 8,
"function": "enemy-near variant: same head, minor third substituted, cellos low"
}
],
"motif_stated": [
"JOURNEY_WORLD"
],
"motif_developed": [
"FAM_THE_SUBSTRATE"
],
"motif_operation": "carrier migration per block; the tune never changes, the voice does",
"distinct_motifs": 4,
"anti_tiling": "Twelve interchangeable blocks with a compatibility matrix, ordered at run time (FORM-04 / LOOP-08 / EARWORM R11). No fixed loop exists to tile. The stated duration is one traversal of the pool, not the pool's period.",
"laws": [
"KONDO FORM-04",
"KONDO PHRASE-03",
"KONDO PHRASE-06",
"SNES LOOP-08",
"SNES LOOP-09",
"EARWORM R9",
"EARWORM R10",
"EARWORM R11"
],
"canon_refs": [
"docs/proposals/music/LEITMOTIF_ARCHITECTURE.md section 4",
"T0_Chapter_Index.mode_variety_check"
],
"care_notes": "JOURNEY_WORLD may never become the recurring threat cue for any region it enters (LEITMOTIF_ARCHITECTURE section 4). The state_threat variant is a THREAT state, not a PLACE colour, and it is scored identically in every region.",
"substrate_confidence": "full",
"reveal_gate": "NONE",
"interactive_hook": "Block selection is driven by player cadence: standing still selects state_calm within one bar boundary; an enemy in range selects state_threat on the next downbeat, never mid-bar (LOOP-06).",
"region": null,
"region_page": null,
"short_loop_justification": null,
"_doc": "A per-track IDENTITY CARD. It says what the track IS on the axes a listener hears in the first four seconds, so that no two tracks in the roster read as the same track. Consumed by the composition lane; scored against build/audio/complete_tracks/SAMENESS_BASELINE.md.",
"_emitter": "harness/music_gen/emit_identity_cards.py",
"_ruling_served": "Josh 2026-08-05 -- 12 to 20 complete tracks with real orchestral complexity, not one 30-second texture fifteen times.",
"tempo_band_range_bpm": [
80,
99
],
"instrumentation_family_meaning": "a reduced chamber body: strings and woodwinds only, no brass, no percussion.",
"energy_class_meaning": "walking pace, unhurried travel, room to breathe.",
"time_signature": "6/8",
"beats_per_bar_quarter_equivalents": 3,
"bar_seconds": 1.9565,
"_duration_is_derived": "total_bars x beats_per_bar x 60 / bpm -- not hand-declared",
"target_duration_mmss": "3:08",
"form_summary": "A_block_1(8) - A_block_2(8) - B_block_1(8) - B_block_2(8) - C_block_1(8) - C_block_2(8) - D_block_1(8) - D_block_2(8) - E_block_1(8) - E_block_2(8) - state_calm(8) - state_threat(8)",
"section_count": 12,
"loop_point_cadence": "weakened -- half cadence or a bVII substitution, never a perfect authentic cadence (KONDO PHRASE-05, the anti-fatigue law)",
"stack_coverage": {
"current_stack": "sfizz 1.2.3 + VSCO2-CE + VCSL (23 instruments, CC0; CPU render)",
"renderable_today": true,
"missing_classes": [],
"sourcing_action": "none -- the landed stack covers this card.",
"honest_note": "The shipped cohort's 'one instrument set' is PARTLY a stack constraint: the landed 23 instruments contain no percussion, no choir, no trumpet, no tuba and no period instrument. A card that names them is naming what has to be acquired, not claiming it exists."
},
"order": 2
}