{
  "revision": "distinct-themes-v2",
  "generated_with": "MiniMax Music 2.5 via MuleRun / MuleRouter CLI",
  "model_selection": "Explicit user choice retained",
  "not_field_recordings": true,
  "created_utc": "2026-10-06T03:52:50.004304+00:00",
  "processing": "Duration-adaptive end/start overlap, 35 Hz high-pass and 9.2 kHz low-pass, restrained 1.5 dB articulation shelf, constant energy matching with gentle peak shaping only where necessary, stereo 24 kHz MP3.",
  "verification": "Decoded-signal level, clipping, seam, duration and hash checks. Listening quality and vocal absence were not verified by an audio-capable model.",
  "assets": [
    {
      "id": "music-today",
      "file": "music-today-v2.mp3",
      "theme": "Acoustic guitar and piano waterfront theme",
      "model": "minimax/music-2.5/generation",
      "task_id": "5dbcad5f-cbe2-410e-9b60-e786d7729b18",
      "original_duration_seconds": 57.678367,
      "loop_duration_seconds": 54.0,
      "source_excerpt_start_seconds": 2.0187428450000002,
      "crossfade_seconds": 1.441959175,
      "gentle_peak_shaping": false,
      "sample_rate": 24000,
      "channels": 2,
      "bytes": 757052,
      "signal": {
        "rms": 0.0807592902360409,
        "peak": 0.4382770359516144,
        "crest_db": 14.69112444879735,
        "mean_dbfs": -21.856150131349892,
        "peak_dbfs": -7.165025682552542,
        "seam_max": 0.01571071892976761,
        "adjacent_delta_max": 0.0827430454082787
      },
      "source_excerpt_signal": {
        "rms": 0.21997726419945995,
        "peak": 1.1867393255233765,
        "crest_db": 14.639550749645009,
        "mean_dbfs": -13.152444069279973,
        "peak_dbfs": 1.4871066803650361
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      "sha256": "4eac23b69679efbb8982ff96bbf37558a01ac00822f9d3fefd9757065921cef5",
      "original_sha256": "b2fbab487588be7b70a50e58a84e7739118afc979ec8d95e2ca088e8dd2ef0fb",
      "prompt": "Compose a fully instrumental soundtrack cue about 75 seconds long for walking through an interactive Shanghai waterfront world. A distinct memorable musical theme, clear instruments, a tuneful repeating motif, gentle harmonic movement and a musical pulse. Normal polished studio mix with intelligible melody; this will be mixed quietly by the application. No singing, humming, choir, spoken words, vocal chops or vocal-like synthesizers. No environmental recordings, river noise, bird calls or traffic; those are separate layers. No featureless drone, no long ambient introduction, no whistle, no big cinematic swell or loud beat drop. Establish the main theme within two seconds, develop it through repeating 8-bar phrases for at least a minute, then return to the initial harmony. TODAY: a sunny warm city waterfront. Foreground fingerpicked acoustic guitar playing a recognizable 4-note melody, warm acoustic piano answering with a second motif, lightly plucked upright bass, occasional soft shaker. Bright natural acoustic chamber-pop, 84 BPM in 4/4, D major with add-nine chords, optimistic and relaxed. The guitar is the unmistakable lead throughout. No synthesizer pad, no electric piano, no celesta or bell lead.",
      "lyrics_prompt": "[Intro]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Chorus]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Outro]\n[Instrumental]"
    },
    {
      "id": "music-bloom",
      "file": "music-bloom-v2.mp3",
      "theme": "Marimba, harp and celesta cherry-blossom waltz",
      "model": "minimax/music-2.5/generation",
      "task_id": "604c4f34-2b31-4688-9a8e-62e8f597614c",
      "original_duration_seconds": 46.706939,
      "loop_duration_seconds": 43.62220833333333,
      "source_excerpt_start_seconds": 1.6347428650000002,
      "crossfade_seconds": 1.25,
      "gentle_peak_shaping": false,
      "sample_rate": 24000,
      "channels": 2,
      "bytes": 611900,
      "signal": {
        "rms": 0.08076978513454636,
        "peak": 0.421428382396698,
        "crest_db": 14.349497071945677,
        "mean_dbfs": -21.855021448726035,
        "peak_dbfs": -7.505524376780356,
        "seam_max": 0.002414732240140438,
        "adjacent_delta_max": 0.11982280015945435
      },
      "source_excerpt_signal": {
        "rms": 0.21998659493090816,
        "peak": 1.1464176177978516,
        "crest_db": 14.338932680382698,
        "mean_dbfs": -13.1520756494567,
        "peak_dbfs": 1.1868570309259985
      },
      "sha256": "a5918dfe6faa4da4a508a58e234caca82cfd071dbb61b85ffa0c2f106d683170",
      "original_sha256": "b76c3cf88925458981ba5dc3e8049ea043af4c64e44ddfab4ea3693bc6ea0e32",
      "prompt": "Compose a fully instrumental soundtrack cue about 75 seconds long for walking through an interactive Shanghai waterfront world. A distinct memorable musical theme, clear instruments, a tuneful repeating motif, gentle harmonic movement and a musical pulse. Normal polished studio mix with intelligible melody; this will be mixed quietly by the application. No singing, humming, choir, spoken words, vocal chops or vocal-like synthesizers. No environmental recordings, river noise, bird calls or traffic; those are separate layers. No featureless drone, no long ambient introduction, no whistle, no big cinematic swell or loud beat drop. Establish the main theme within two seconds, develop it through repeating 8-bar phrases for at least a minute, then return to the initial harmony. BLOOM: a playful imaginative garden waltz. Foreground rounded wooden marimba with a nimble repeating rising-and-falling motif, flowing harp arpeggios, delicate celesta answering phrases, a very light pizzicato string pulse. Clearly in 3/4 at 108 BPM, F major with gentle pentatonic colors, buoyant and organic. Marimba and harp remain clearly audible and distinct. No acoustic guitar, no piano lead, no bass drum, no ambient pad.",
      "lyrics_prompt": "[Intro]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Chorus]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Outro]\n[Instrumental]"
    },
    {
      "id": "music-night",
      "file": "music-night-v2.mp3",
      "theme": "Electric piano, soft bass and brushed downtempo pulse",
      "model": "minimax/music-2.5/generation",
      "task_id": "0bbb8eb9-a963-4e56-bb02-cc0bf96c5943",
      "original_duration_seconds": 108.913197,
      "loop_duration_seconds": 54.0,
      "source_excerpt_start_seconds": 3,
      "crossfade_seconds": 2.722829925,
      "gentle_peak_shaping": false,
      "sample_rate": 24000,
      "channels": 2,
      "bytes": 757052,
      "signal": {
        "rms": 0.08076409282656884,
        "peak": 0.36936694383621216,
        "crest_db": 13.204794135492328,
        "mean_dbfs": -21.85563361453946,
        "peak_dbfs": -8.650839479047132,
        "seam_max": 0.0016450895927846432,
        "adjacent_delta_max": 0.22616155445575714
      },
      "source_excerpt_signal": {
        "rms": 0.3228836688709012,
        "peak": 1.4721546173095703,
        "crest_db": 13.178146920748928,
        "mean_dbfs": -9.819078412051569,
        "peak_dbfs": 3.35906850869736
      },
      "sha256": "a36b9531536a139501b522e16fc8f984abfd996593027eda997b5923bfbb49a6",
      "original_sha256": "ac1530e9e15328a9a5b79ddcb6f44d3037a6e4d58cc4c5ac5711e5132e0fb4c3",
      "prompt": "Compose a fully instrumental soundtrack cue about 75 seconds long for walking through an interactive Shanghai waterfront world. A distinct memorable musical theme, clear instruments, a tuneful repeating motif, gentle harmonic movement and a musical pulse. Normal polished studio mix with intelligible melody; this will be mixed quietly by the application. No singing, humming, choir, spoken words, vocal chops or vocal-like synthesizers. No environmental recordings, river noise, bird calls or traffic; those are separate layers. No featureless drone, no long ambient introduction, no whistle, no big cinematic swell or loud beat drop. Establish the main theme within two seconds, develop it through repeating 8-bar phrases for at least a minute, then return to the initial harmony. NIGHT: urban blue hour beside warm reflected windows. Foreground mellow electric piano with a recognizable syncopated 5-note motif, round soft electric bass, restrained brushed snare and closed-hat pulse, tiny warm analog synth answers. Downtempo instrumental soul, 72 BPM in 4/4, C minor colored with warm sixths and ninths, intimate and hopeful. An audible gentle groove, not a drone. No acoustic guitar, no marimba, no harp, no bell lead, no aggressive drums or sub-bass.",
      "lyrics_prompt": "[Intro]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Chorus]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Outro]\n[Instrumental]"
    },
    {
      "id": "music-autumn",
      "file": "music-autumn-v2.mp3",
      "theme": "Plucked strings, cello and clarinet autumn theme",
      "model": "minimax/music-2.5/generation",
      "task_id": "cd523e5f-bb39-4a33-9358-7148953dce58",
      "original_duration_seconds": 58.433016,
      "loop_duration_seconds": 54.0,
      "source_excerpt_start_seconds": 2.0451555600000004,
      "crossfade_seconds": 1.4608254,
      "gentle_peak_shaping": false,
      "sample_rate": 24000,
      "channels": 2,
      "bytes": 757052,
      "signal": {
        "rms": 0.08075672254822978,
        "peak": 0.36294591426849365,
        "crest_db": 13.053264534908532,
        "mean_dbfs": -21.856426297812522,
        "peak_dbfs": -8.80316176290399,
        "seam_max": 0.004505939781665802,
        "adjacent_delta_max": 0.10743589699268341
      },
      "source_excerpt_signal": {
        "rms": 0.21939376407312602,
        "peak": 0.9747133851051331,
        "crest_db": 12.953053014421872,
        "mean_dbfs": -13.175514414635375,
        "peak_dbfs": -0.22246140021350358
      },
      "sha256": "01f014395807e111682ad2e72376961d46cb1dc2a1ae6a6d0466b045793daeb7",
      "original_sha256": "93693c4b8fd60258f8f51dbb452f7a566e3fead9ac045e463ff25f15f2ff6f2a",
      "prompt": "Compose a fully instrumental soundtrack cue about 75 seconds long for walking through an interactive Shanghai waterfront world. A distinct memorable musical theme, clear instruments, a tuneful repeating motif, gentle harmonic movement and a musical pulse. Normal polished studio mix with intelligible melody; this will be mixed quietly by the application. No singing, humming, choir, spoken words, vocal chops or vocal-like synthesizers. No environmental recordings, river noise, bird calls or traffic; those are separate layers. No featureless drone, no long ambient introduction, no whistle, no big cinematic swell or loud beat drop. Establish the main theme within two seconds, develop it through repeating 8-bar phrases for at least a minute, then return to the initial harmony. AUTUMN: a reflective walk beneath golden Shanghai plane trees. Foreground warm bowed cello and mellow clarinet trading a memorable descending five-note melody, delicate steel-string fingerpicked accompaniment and rounded pizzicato string accents. A lyrical acoustic chamber piece in 6/8 at 66 dotted-quarter BPM, G major with wistful E-minor turns, tender and quietly hopeful. Clear expressive melody, gentle forward motion, autumn warmth. No piano, no marimba, no celesta, no electronic pads, no flute or whistle, no drums.",
      "lyrics_prompt": "[Intro]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Chorus]\n[Instrumental]\n[Verse]\n[Instrumental]\n[Outro]\n[Instrumental]"
    }
  ]
}