music-generation

Music Generation Skill

Generate music, songs, and audio using AI (Suno, Udio, Google Lyria).

Prerequisites

At least one API key is required:

• GOOGLE_API_KEY - For Google Lyria (same key as video/image) ✅
• SUNO_API_KEY - For Suno music generation
• UDIO_API_KEY - For Udio music generation

Available APIs

Google Lyria (Instrumental Only)

• Best for: Background music, beats, soundtracks, game audio
• Duration: Any length (streams in real-time)
• Features: BPM control, key/scale, brightness, density
• Output: 48kHz stereo WAV
• API Key: Same GOOGLE_API_KEY as video/image generation ✅
• ⚠️ INSTRUMENTAL ONLY - Cannot generate vocals

Suno (Recommended for Songs with Vocals)

• Best for: Full songs with vocals, catchy melodies, various genres
• Duration: Up to 4 minutes
• Features: Lyrics generation, instrumental mode, style tags
• Genres: Pop, rock, jazz, electronic, classical, hip-hop, and more

Udio

• Best for: High-fidelity audio, experimental styles, remixes
• Duration: Up to 2 minutes per generation
• Features: Style control, audio quality options
• Genres: Wide variety with strong electronic/experimental support

Workflow

Step 1: Ask Key Question - Vocals or Instrumental?

This determines which API to use:

Need	API	Why
Vocals/Lyrics	Suno or Udio	Lyria cannot generate vocals
Instrumental only	Lyria (preferred)	Same API key as video/image, real-time control
Background music	Lyria	Best for soundtracks, game audio
Full songs	Suno	Best vocal quality

Example prompt to user:

"I'll generate that music! Quick question:

1. Do you need vocals/lyrics?

   • Yes → I'll use Suno (best for songs)
   • No, instrumental only → I'll use Lyria (same key as video/image)

2. What genre/mood? (e.g., chill lo-fi, epic orchestral, upbeat pop)

3. How long? (Lyria: any length, Suno: up to 4 min)

4. Any BPM preference? (e.g., 90 for chill, 128 for dance)"

---

Step 2: Understand the Request

Parse the user's music request for:

• Genre/style: Pop, rock, jazz, electronic, classical, etc.
• Mood: Happy, sad, energetic, calm, dramatic
• Tempo: Fast, slow, medium, specific BPM
• Vocals: With vocals → Suno/Udio, Instrumental → Lyria
• Purpose: Background music, song, jingle, soundtrack
• Duration: How long should it be?

Step 2: Craft the Prompt

Transform the user request into an effective music generation prompt:

1. Specify genre: Be specific about the style
2. Describe mood: Emotional tone and energy level
3. Include instruments: What should be prominent
4. Add production style: Lo-fi, polished, vintage, modern
5. Set tempo: BPM or descriptive (upbeat, slow)

Example transformation:

• User: "happy summer song"
• Enhanced: "Upbeat indie pop song with bright acoustic guitar, cheerful ukulele, and sunny vibes. Feel-good summer anthem with catchy hooks and positive energy. Male vocals, 120 BPM, radio-friendly production"

Step 3: Handle Lyrics (If Needed)

For songs with vocals:

• User provides lyrics: Use them directly
• Generate lyrics: Ask Suno/Udio to generate, or use Claude to write them first
• Instrumental: Specify "instrumental" to skip vocals

Lyrics format for Suno:

[Verse 1]
Your lyrics here

[Chorus]
Catchy chorus lyrics

[Verse 2]
More lyrics

Step 4: Select the API

Choose based on requirements:

Use Case	Recommended API	Reason
Instrumental/background	Lyria	Same API key, any duration, real-time control
Full songs with vocals	Suno	Best vocal quality
Lo-fi beats	Lyria	Great for ambient/chill
Experimental/electronic	Udio	Strong in these genres
Specific lyrics needed	Suno	Lyrics input support
Game/video soundtrack	Lyria	Precise BPM/key control

Step 5: Generate the Music

Execute the appropriate script from ${CLAUDE_PLUGIN_ROOT}/skills/music-generation/scripts/:

For Google Lyria (Instrumental):

python3 ${CLAUDE_PLUGIN_ROOT}/skills/music-generation/scripts/lyria.py \
  --prompt "chill lo-fi hip hop, jazzy piano, vinyl crackle" \
  --duration 60 \
  --bpm 85

Lyria with key/scale:

python3 ${CLAUDE_PLUGIN_ROOT}/skills/music-generation/scripts/lyria.py \
  --prompt "ambient, ethereal synths, dreamy" \
  --duration 120 \
  --scale "C" \
  --brightness 0.7

Lyria with multiple prompts (blended):

python3 ${CLAUDE_PLUGIN_ROOT}/skills/music-generation/scripts/lyria.py \
  --prompt "minimal techno" \
  --prompt "deep bass, 808" \
  --bpm 128 \
  --duration 90

For Suno (with vocals):

python3 ${CLAUDE_PLUGIN_ROOT}/skills/music-generation/scripts/suno.py \
  --prompt "upbeat indie pop, summer vibes, acoustic guitar" \
  --title "Summer Days"

For Udio:

python3 ${CLAUDE_PLUGIN_ROOT}/skills/music-generation/scripts/udio.py \
  --prompt "cinematic orchestral, epic trailer music" \
  --duration 120

Step 6: Deliver the Result

1. Provide the generated audio file path
2. Share the prompt and settings used
3. Mention the duration and format
4. Offer to:
   • Generate variations
   • Try different style/genre
   • Adjust tempo or mood
   • Extend the track
   • Add or remove vocals

Error Handling

Missing API key: Inform the user which key is needed:

• Lyria: Same GOOGLE_API_KEY as video/image - https://aistudio.google.com/apikey
• Suno: https://suno.com/api (or app.suno.ai)
• Udio: https://udio.com/api

Lyria requires google-genai package: pip install google-genai

User wants vocals but only has GOOGLE_API_KEY: Explain Lyria is instrumental-only, suggest Suno/Udio.

Content policy violation: Rephrase lyrics or prompt.

Generation failed: Retry with simplified prompt.

Quota exceeded: Suggest waiting or trying other provider.

Prompt Engineering Tips

Genre Tags (Suno Style)

Include specific genre tags for best results:

• [pop, upbeat, female vocals, 128 BPM]
• [jazz, smooth, saxophone, laid-back]
• [electronic, synthwave, 80s, driving]
• [classical, orchestral, emotional, strings]

Mood Descriptors

• Energetic: upbeat, driving, powerful, intense
• Calm: relaxing, ambient, peaceful, gentle
• Happy: cheerful, bright, sunny, joyful
• Sad: melancholic, emotional, heartfelt, somber
• Epic: cinematic, dramatic, sweeping, grand

Production Style

• Lo-fi: warm, vintage, tape hiss, nostalgic
• Polished: crisp, modern, radio-ready, professional
• Raw: garage, live, organic, unpolished
• Electronic: synthesizers, digital, processed

API Comparison

Feature	Lyria	Suno	Udio
API Key	GOOGLE_API_KEY ✅	SUNO_API_KEY	UDIO_API_KEY
Max duration	Unlimited	4 minutes	2 minutes
Vocals	❌ No	✅ Excellent	✅ Good
Instrumentals	✅ Excellent	✅ Great	✅ Excellent
BPM control	✅ 60-200	❌ No	❌ No
Key/Scale control	✅ Yes	❌ No	❌ No
Audio quality	48kHz WAV	Very good	Excellent
Lyrics input	❌ No	✅ Yes	✅ Yes
Real-time steering	✅ Yes	❌ No	❌ No
Best for	Beats, soundtracks	Songs	Experimental

Example Prompts

Pop Song

Catchy pop song with female vocals, bright synths, and an anthemic chorus. 
Feel-good energy, summer vibes, 120 BPM, radio-friendly production.

Cinematic Score

Epic orchestral trailer music with building tension. Powerful brass, 
sweeping strings, thundering percussion. Dramatic and emotional.

Lo-fi Beat

Chill lo-fi hip hop beat, jazzy piano samples, vinyl crackle, 
relaxed drums, perfect for studying. 85 BPM, nostalgic mood.

Electronic Dance

High-energy EDM track with massive drops, pulsing synths, 
four-on-the-floor beat. Festival-ready, 128 BPM.

Lyria-Specific Examples

Lo-fi Study Beats

python3 lyria.py -p "lo-fi hip hop, jazzy piano, vinyl crackle, chill" \
  --duration 300 --bpm 85 --brightness 0.3

Techno/Dance

python3 lyria.py -p "minimal techno, deep bass, 808 drums" \
  --duration 120 --bpm 128 --density 0.7

Ambient/Meditation

python3 lyria.py -p "ambient, ethereal, soft pads, dreamy" \
  --duration 180 --brightness 0.8 --density 0.2

Game Soundtrack

python3 lyria.py -p "epic orchestral, cinematic, dramatic strings" \
  --duration 90 --scale "D" --mode quality

Lyria Prompt Tips

• Instruments: piano, guitar, synth, drums, bass, strings, 808, Rhodes, Moog
• Genres: lo-fi hip hop, minimal techno, ambient, jazz fusion, synthwave, chillout
• Moods: chill, energetic, dreamy, dark, upbeat, melancholic, epic
• Combine prompts: Use multiple -p flags to blend styles