doubao-music

name	doubao-music
description	AI music generation using Volcengine Doubao (豆包) Music API — generate vocal songs, instrumental BGM, and lyrics. Use when users want to create music, generate songs, compose BGM/background music, write lyrics, or anything related to AI music creation with Doubao/豆包/火山引擎.
metadata	{"openclaw":{"emoji":"🎵","requires":{"bins":"[Truncated]","env":"[Truncated]"},"primaryEnv":"VOLC_ACCESSKEY"}}

Doubao Music (豆包音乐生成)

Generate vocal songs, instrumental BGM, and lyrics using Volcengine Doubao Music API. Supports multiple model versions (v4.0/v4.3/v5.0) with rich genre, mood, timbre, and scene controls.

Prerequisites

1. Activate the 音视频理解与处理 service in 火山引擎控制台
2. Create IAM Access Key: 密钥管理
3. Set environment variables:

VOLC_ACCESSKEY=your_access_key
VOLC_SECRETKEY=your_secret_key

Workflow

Vocal Song / BGM (Async)

1. Submit Task — call GenSong or GenBGM → get TaskID
2. Poll Status — query every 10s until Status=2 (success) or Status=3 (failed)
3. Get Audio — download AudioUrl from result

Lyrics (Sync)

1. Call GenLyrics — returns lyrics immediately in response

Quick Start

# Generate a vocal song
python3 scripts/music_gen.py song --prompt "一首温暖的流行歌曲，关于春天和希望"

# Generate instrumental BGM
python3 scripts/music_gen.py bgm --text "轻松的咖啡厅爵士背景音乐" --duration 30

# Generate lyrics
python3 scripts/music_gen.py lyrics --prompt "关于夏天海边的浪漫故事"

# Vocal song with full options (v4.3)
python3 scripts/music_gen.py song \
  --prompt "一首充满活力的摇滚歌曲" \
  --model-version v4.3 \
  --genre Rock --mood "Dynamic/Energetic" \
  --gender Male --timbre Powerful \
  --output rock_song.mp3

# BGM with options (v5.0)
python3 scripts/music_gen.py bgm \
  --text "史诗感的电影配乐" \
  --genre Epic --mood "Shocking/magnificent/epic" \
  --scene "Trailer" --instrument Strings \
  --duration 60 --output epic_bgm.mp3

API Reference

All APIs use HMAC-SHA256 V4 signing against open.volcengineapi.com.

Field	Value
Host	open.volcengineapi.com
Service	imagination
Region	cn-beijing
Version	2024-08-12

GenSongV4 / GenSongForTime — 生成人声歌曲

GenSongV4 is prepaid, GenSongForTime is postpaid. Same parameters.

Parameter	Type	Required	Description
Prompt	string	Yes	Song description (5-2000 chars, Chinese recommended)
Lyrics	string	No	Custom lyrics (leave empty for AI-generated)
ModelVersion	string	No	v4.0 / v4.3 / v5.0 (default varies)
Genre	string	No	Music genre (see params reference)
Mood	string	No	Mood/emotion
Gender	string	No	Male / Female
Timbre	string	No	Voice timbre
Duration	int	No	Duration in seconds (0 = auto)
Tempo	string	No	V4.3 only: tempo marking
Kmode	string	No	V4.3 only: Major / Minor
Instrument	string	No	V4.3 only: instrument
Scene	string	No	V4.3 only: scene/occasion
Lang	string	No	V4.3+: language

GenBGM / GenBGMForTime — 生成纯音乐

GenBGM is prepaid, GenBGMForTime is postpaid. Same parameters.

Parameter	Type	Required	Description
Text	string	Yes	Music description (note: field name is Text, not Prompt)
ModelVersion	string	No	v5.0 recommended
Genre	[]string	No	Genre array, e.g. ["Jazz"]
Mood	[]string	No	Mood array, e.g. ["Chill"]
Scene	[]string	No	Scene array
Instrument	[]string	No	Instrument array
Duration	int	No	Duration in seconds

Important: BGM parameters Genre, Mood, Scene, Instrument are arrays (not strings). For ModelVersion v5.0, you can describe everything in Text and omit these fields.

GenLyrics — 歌词生成

Synchronous — returns lyrics directly.

Parameter	Type	Required	Description
Prompt	string	Yes	Theme/description for lyrics
Genre	string	No	Genre
Mood	string	No	Mood
Gender	string	No	Male / Female
ModelVersion	string	No	v3.0

QuerySong — 查询任务状态

Used to poll vocal song and BGM generation tasks.

Parameter	Type	Required	Description
TaskID	string	Yes	Task ID from GenSong/GenBGM response

Status codes:

Status	Meaning	Action
1	Processing	Continue polling
2	Success	Extract AudioUrl from SongDetail
3	Failed	Check FailureReason

Success response fields (Result.SongDetail):

Field	Description
AudioUrl	Download URL for the generated audio
Lyrics	Generated lyrics (vocal songs)
Duration	Audio duration in seconds

Common Parameter Values (Quick Reference)

Gender

Male, Female

ModelVersion

• Vocal songs: v4.0, v4.3, v5.0
• BGM: v5.0
• Lyrics: v3.0

Kmode (V4.3)

Major, Minor

Tempo (V4.3)

Grave, Largo, Adagio, Andante, Moderato, Allegro, Vivace, Presto

Lang

• V4.3: Chinese, English, Instrumental/Non-vocal
• V5.0: Chinese, Cantonese, English, Instrumental/Non-vocal

Genre (Vocal Song, common)

Pop, Rock, Folk, Electronic, Jazz, Hip Hop/Rap, R&B/Soul, Chinese Style, Country, Blues, Metal, Reggae, DJ, Punk, Disco, Bossa Nova, Pop Rock, Alternative/Indie

Mood (common)

Happy, Chill, Romantic, Dynamic/Energetic, Sentimental/Melancholic/Lonely, Inspirational/Hopeful, Nostalgic/Memory, Excited, Calm/Relaxing, Dreamy/Ethereal, Groovy/Funky

Timbre (Vocal Song, common)

Warm, Bright, Husky, Powerful, Sweet_AUDIO_TIMBRE, Sexy/Lazy, Gentle, Energetic, Magnetic, Deep

For the complete parameter lists (100+ genres, 30+ moods, 25+ timbres, 80+ instruments, 100+ scenes), read references/params.md.

Polling Strategy

# Auto-poll with defaults (60 attempts, 10s interval = 10 min timeout)
python3 scripts/music_gen.py song --prompt "你的描述"

# Custom timeout
python3 scripts/music_gen.py song --prompt "你的描述" --max-poll 30 --poll-interval 15

Typical generation time: 1-3 minutes for songs, 30s-2min for BGM.

Error Handling

Error	Cause	Fix
AccessDenied	AK/SK invalid or service not activated	Check credentials; activate 音视频理解与处理 service
InvalidRequestParams	Bad parameter value	Check parameter against allowed values in references/params.md
APINoSource	Service quota exhausted or not purchased	Purchase/activate the specific feature in console
InternalError with missing required parameter	Wrong field name	BGM uses Text (not Prompt); Genre/Mood/Instrument/Scene are arrays for BGM
InternalError with invalid	Parameter value not in allowed list	Check the correct ModelVersion's allowed values
Status=3 in polling	Generation failed	Check FailureReason in response; try simpler prompt
Polling timeout	Task still running	Increase --max-poll; complex prompts take longer

V4 Signing (HMAC-SHA256)

The script handles signing automatically. The signing process:

1. Create canonical request with POST /, query params Action=<action>&Version=2024-08-12, signed headers content-type;host;x-date
2. Build credential scope: <date>/<region>/<service>/request
3. Build string to sign: HMAC-SHA256\n<datetime>\n<scope>\n<hash(canonical)>
4. Derive signing key: HMAC chain of SK → date → region → service → "request"
5. Compute signature and set Authorization header

Architecture Notes

• Vocal song and BGM generation are asynchronous — submit task, poll for result
• Lyrics generation is synchronous — result returned immediately
• Audio URLs from completed tasks are temporary — download promptly
• Chinese prompts generally produce better results than English
• V5.0 models are the latest; V4.3 offers more fine-grained parameter control