Phase 4: Audio & Music Generation · 50 min · Python · Suno API · ElevenLabs API

Audio Generation API Integration

Suno for songs, Stable Audio for SFX, ElevenLabs for commercial music, MusicGen for local — programmatic audio generation across providers.

Hiring signal: Audio API integration across multiple providers (Suno, Stable Audio, ElevenLabs, MusicGen) demonstrates multi-provider engineering skills for audio generation.

What you will learn

Integrate Suno API for programmatic song generation with style and lyric control
Integrate Stable Audio API for instrumental and SFX generation
Integrate ElevenLabs Music API for commercially-licensed music
Use MusicGen via Hugging Face Transformers for local inference

The Problem

A team needs to integrate audio generation into their product. They need:

Full songs with vocals for user-generated content → Suno API
Background SFX for video → Stable Audio API
Commercially-licensed music for paid features → ElevenLabs Music API
Local inference for cost optimization → MusicGen via Hugging Face

Each provider has a different API pattern. The team needs to integrate all four and route requests to the appropriate provider based on use case.

What you'll build
Integrate four audio generation APIs: Suno (songs), Stable Audio (SFX), ElevenLabs (commercial music), and MusicGen (local). Build a unified audio generation interface that routes to the correct provider.

Suno API Integration

import requests

SUNO_API_KEY = os.getenv("SUNO_API_KEY")
SUNO_API = "https://api.suno.ai/v1"

def generate_song(prompt: str, style: str = "pop", duration: int = 30,
                  lyrics: str = None, voice_reference: str = None) -> dict:
    """Generate a song with Suno API."""
    payload = {
        "prompt": prompt,
        "style": style,
        "duration": duration,
    }
    if lyrics:
        payload["lyrics"] = lyrics
    if voice_reference:
        payload["voice_reference"] = voice_reference

    response = requests.post(
        f"{SUNO_API}/generate",
        headers={"Authorization": f"Bearer {SUNO_API_KEY}"},
        json=payload,
    )
    return response.json()

Suno API Parameters

Parameter	Required	Description
`prompt`	Yes	Text description of the song
`style`	No	Genre: pop, rock, jazz, electronic, etc.
`duration`	No	Length in seconds (30-240)
`lyrics`	No	Custom lyrics (otherwise auto-generated)
`voice_reference`	No	URL to voice sample for matching

Unlock the full lesson

You've read the first 2 sections. The rest of this lesson covers Stable Audio API Integration, ElevenLabs Music API, MusicGen via Hugging Face Transformers, Unified Audio Generation Interface, Async Pattern (Same as Video), Key Takeaways, What's Next — plus a hands-on lab, quiz, and project artifact.

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Key terms in this lesson

Inference