MODEL ID minimax:music@cover

api-only

MiniMax Music Cover

by MiniMax April 10, 2026

MiniMax Music Cover is MiniMax’s song-to-song transformation model for reimagining an existing track in a new style. It preserves the original vocal melody while changing voice timbre, instrumentation, genre, and arrangement through a text prompt. It supports one-step generation from reference audio or a two-step workflow with preprocessing and optional lyric editing.

API Options

Platform-level options for task execution and delivery.

taskType string required value: audioInference: Identifier for the type of task being performed

taskUUID string required UUID v4: UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

outputType string default: URL: Audio output type.

Allowed values 3 values

outputFormat string default: MP3

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

`MP3`: Compressed audio, smaller file size.
`WAV`: Uncompressed, high-quality audio.
`FLAC`: Lossless compression.
`OGG`: Open-source compressed audio format (Vorbis codec).

Allowed values 4 values

audioSettings object

Audio encoding settings for controlling the bitrate, number of channels, and sample rate of the generated audio. Only applicable for lossy output formats (MP3 and OGG). When using lossless formats (WAV or FLAC), this parameter must not be provided.

The available sample rates and valid bitrate ranges depend on the output format. For OGG, bitrate limits also vary by the number of channels.

MP3 bitrate limits

Bitrate limits for MP3 are the same regardless of mono or stereo.

Sample Rate	Min Bitrate	Max Bitrate
8,000 Hz	8 kbps	64 kbps
11,025 Hz	8 kbps	64 kbps
12,000 Hz	8 kbps	64 kbps
16,000 Hz	8 kbps	160 kbps
22,050 Hz	8 kbps	160 kbps
24,000 Hz	8 kbps	160 kbps
32,000 Hz	32 kbps	320 kbps
44,100 Hz	32 kbps	320 kbps
48,000 Hz	32 kbps	320 kbps

OGG bitrate limits — Mono (1 channel)

Sample Rate	Min Bitrate	Max Bitrate
8,000 Hz	8 kbps	40 kbps
12,000 Hz	16 kbps	48 kbps
16,000 Hz	16 kbps	96 kbps
24,000 Hz	16 kbps	80 kbps
48,000 Hz	32 kbps	224 kbps

OGG bitrate limits — Stereo (2 channels)

Sample Rate	Min Bitrate	Max Bitrate
8,000 Hz	16 kbps	80 kbps
12,000 Hz	16 kbps	96 kbps
16,000 Hz	24 kbps	192 kbps
24,000 Hz	32 kbps	160 kbps
48,000 Hz	48 kbps	256 kbps

Lossless formats: When outputFormat is set to WAV or FLAC, the audioSettings parameter is not available since these formats produce uncompressed or lossless audio with no configurable encoding settings.

Properties 3 properties

audioSettings » bitrate bitrate integer min: 8: Audio bitrate in kbps.

audioSettings » channels channels integer default: 2: Number of audio channels. 1 for mono, 2 for stereo.

Allowed values 2 values

audioSettings » sampleRate sampleRate integer: Audio sample rate in Hz.

webhookURL string URI

Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.

Learn more 1 resource

Webhooks
PLATFORM

deliveryMethod string default: sync

Determines how the API delivers task results.

Allowed values 2 values

: Returns complete results directly in the API response.
: Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.

Learn more 1 resource

Task Polling
PLATFORM

uploadEndpoint string URI

Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.

Common use cases:

Cloud storage: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
CDN integration: Upload to content delivery networks for immediate distribution.

// S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg

The content data will be sent as the request body to the specified URL when generation is complete.

ttl integer min: 60: Time-to-live (TTL) in seconds for generated content. Only applies when outputType is URL.

includeCost boolean default: false: Include task cost in the response.

numberResults integer min: 1 max: 4 default: 1: Number of results to generate. Each result uses a different seed, producing variations of the same parameters.

Inputs

Input resources for the task (images, audio, etc). These must be nested inside the inputs object.

inputs » audio audio string required: Audio input (UUID or URL). The provided audio file must be between 6 seconds and 6 minutes in duration.

Generation Parameters

Core parameters for controlling the generated content.

model string required value: minimax:music@cover

Identifier of the model to use for generation.

Learn more 3 resources

positivePrompt string required min: 10 max: 300

Text prompt describing elements to include in the generated output.

Learn more 2 resources

seed integer min: 0 max: 1000000

Random seed for reproducible generation. When not provided, a random seed is generated in the unsigned 32-bit range.

Learn more 1 resource

Text To Image: Seed Controlling Randomness Deterministically
GUIDE

Settings

Technical parameters to fine-tune the inference process. These must be nested inside the settings object.

settings » lyrics lyrics string min: 10 max: 1000: Structured lyrics with section tags such as [Intro], [Verse], [Chorus], [Bridge], [Outro], and [Inst]. For instrumental generation, a tag-only skeleton is acceptable.

taskType string required value: audioInference: Type of the task.

taskUUID string required UUID v4: UUID of the task.

audioUUID string required UUID v4: UUID of the output audio.

audioURL string URI: URL of the output audio.

audioBase64Data string: Base64-encoded audio data.

audioDataURI string URI: Data URI of the output audio.

seed integer: The seed used for generation. If none was provided, shows the randomly generated seed.

cost float: Task cost in USD. Present when includeCost is set to true in the request.

Audio to Audio

Chrome Disco Boxing Gym

0:00

Request

{
  "taskType": "audioInference",
  "taskUUID": "c3ee9e55-851c-4e69-9461-82c2e8dce4f2",
  "model": "minimax:music@cover",
  "positivePrompt": "Transform this song into a sleek late-70s inspired funk-pop cover set in a glamorous boxing gym: bright female lead timbre, tight disco drums, elastic bassline, crisp rhythm guitar, bold brass stabs, crowd chants, sparkling synth accents, dramatic breakdown, triumphant final chorus.",
  "seed": 74885,
  "settings": {
    "lyrics": "[Intro]\n[Verse]\nGloves on the bench, heartbeat in the wire\nNeon on the ropes, sweat turning into fire\nEverybody counts when the bell cuts through the room\nI came here to bloom\n\n[Chorus]\nHit me with the spotlight, stronger every round\nTurn the pressure into gold, let the whole floor pound\nWhen they call my name, I rise above the doubt\nI was born to break out\n\n[Verse]\nMirror on the wall, flashes from the tape\nFootwork like a promise nobody can reshape\nBruises become glitter when the rhythm takes control\nBody, mind, and soul\n\n[Bridge]\nOne more step, one more swing\nHear the horns and feel the ring\n[Chorus]\n[Outro]"
  },
  "inputs": {
    "audio": "https://assets.runware.ai/assets/inputs/e37c876f-c35c-46cd-8bea-831881e3652f.mp3"
  }
}

Response

{
  "taskType": "audioInference",
  "taskUUID": "c3ee9e55-851c-4e69-9461-82c2e8dce4f2",
  "audioUUID": "39ae7787-e219-40cf-b84b-1845e6d419d5",
  "audioURL": "https://am.runware.ai/audio/os/a01d21/ws/5/ai/39ae7787-e219-40cf-b84b-1845e6d419d5.mp3",
  "seed": 74885,
  "cost": 0.15
}

Audio to Audio

Basement Gospel Breakbeat Revival

0:00

Request

{
  "taskType": "audioInference",
  "taskUUID": "b924b635-7802-43f2-a48d-fe0e0ce2053b",
  "model": "minimax:music@cover",
  "positivePrompt": "Transform this demo into a raw gospel-breakbeat cover with punchy chopped drums, Hammond organ, handclaps, tambourine, soulful backing choir, vinyl grit, dynamic rises, and a triumphant live-room feel while keeping the lead vocal melody intact.",
  "seed": 33183,
  "settings": {
    "lyrics": "[Intro]\nOh, hold on, hold on now\n\n[Verse]\nI was walking with a wire in my chest\nStatic in my shoes and a name I never guessed\nThen a doorway opened through the basement sound\nAnd every tired heartbeat started shaking the ground\n\n[Chorus]\nLift me higher than the old routine\nTurn these sparks into a silver stream\nIf I stumble, let the whole room sing\nCarry me, carry me in the swing\n\n[Bridge]\nHey now, hey now\nHands on the downbeat, soul in the snare\nHey now, hey now\nCall from the shadows, answer from the air\n\n[Outro]\nCarry me, carry me"
  },
  "inputs": {
    "audio": "https://assets.runware.ai/assets/inputs/042af0d9-292c-4531-a37b-8bbf5d849710.mp3"
  }
}

Response

{
  "taskType": "audioInference",
  "taskUUID": "b924b635-7802-43f2-a48d-fe0e0ce2053b",
  "audioUUID": "b6395f14-70c7-4029-b7d4-6c8fa6292139",
  "audioURL": "https://am.runware.ai/audio/os/a09dlim3/ws/5/ai/b6395f14-70c7-4029-b7d4-6c8fa6292139.mp3",
  "seed": 33183,
  "cost": 0.15
}

Audio to Audio

Dusty Motown Roller Rink

0:00

Request

{
  "taskType": "audioInference",
  "taskUUID": "104ff53c-245d-4198-955d-3125846a4b1e",
  "model": "minimax:music@cover",
  "positivePrompt": "Transform this song into a retro Motown-inspired roller-rink soul cover with warm analog bass, crisp tambourine, lush string stabs, electric piano, rhythm guitar, rounded drums, joyful backing harmonies, and a smoky charismatic lead voice while preserving the original melody.",
  "seed": 52318,
  "settings": {
    "lyrics": "[Intro]\n\n[Verse]\nKeep the original lyrics and phrasing from the source vocal.\n\n[Chorus]\nKeep the original lyrics and phrasing from the source vocal.\n\n[Verse]\nKeep the original lyrics and phrasing from the source vocal.\n\n[Chorus]\nKeep the original lyrics and phrasing from the source vocal.\n\n[Bridge]\nKeep the original lyrics and phrasing from the source vocal.\n\n[Chorus]\nKeep the original lyrics and phrasing from the source vocal.\n\n[Outro]"
  },
  "inputs": {
    "audio": "https://assets.runware.ai/assets/inputs/dca407c6-ce4c-4f2d-a9c2-3ea792378b48.mp3"
  }
}

Response

{
  "taskType": "audioInference",
  "taskUUID": "104ff53c-245d-4198-955d-3125846a4b1e",
  "audioUUID": "c4bfea87-c364-409f-964c-238a3c29a232",
  "audioURL": "https://am.runware.ai/audio/os/a08dlim3/ws/5/ai/c4bfea87-c364-409f-964c-238a3c29a232.mp3",
  "seed": 52318,
  "cost": 0.15
}

Audio to Audio

Midnight Mirage Synth Cabaret

0:00

Request

{
  "taskType": "audioInference",
  "taskUUID": "645e49e9-cf55-453b-83b9-c2219b6c9ff9",
  "model": "minimax:music@cover",
  "positivePrompt": "Transform this song into a nocturnal synth cabaret piece with sultry contralto vocals, analog bass, brushed drums, cinematic piano, soft brass swells, and a glamorous late-1980s lounge atmosphere while preserving the lead melody.",
  "seed": 76696,
  "settings": {
    "lyrics": "[Intro]\n[Verse]\n[Chorus]\n[Verse]\n[Chorus]\n[Bridge]\n[Chorus]\n[Outro]"
  },
  "inputs": {
    "audio": "https://assets.runware.ai/assets/inputs/39b43dfa-e54f-456a-885f-a51316556d55.mp3"
  }
}

Response

{
  "taskType": "audioInference",
  "taskUUID": "645e49e9-cf55-453b-83b9-c2219b6c9ff9",
  "audioUUID": "87c43150-0b58-4f6f-b737-5b89b4220ed9",
  "audioURL": "https://am.runware.ai/audio/os/a10dlim3/ws/5/ai/87c43150-0b58-4f6f-b737-5b89b4220ed9.mp3",
  "seed": 76696,
  "cost": 0.15
}