ACE Music - Free Suno Alternative Generate unlimited AI music for free using ACE-Step 1.5. Full songs with vocals, lyrics, any genre, any language. No subscription, no credits, no limits. The open-source Suno alternative, powered by ACE Music's free API.

Generate AI music using ACE-Step 1.5 via ACE Music's free API. Use when the user asks to create, generate, or compose music, songs, beats, instrumentals, or audio tracks. Supports lyrics, style prompts, covers, and repainting. Free API, no cost.

ACE Music - AI Music Generation

Generate music via ACE Music's free hosted API (ACE-Step 1.5 model).

Setup

API Key is stored in env ACE_MUSIC_API_KEY. If not set:

1. Open https://acemusic.ai/playground/api-key in the browser for the user
2. Ask them to sign up (free) and paste the API key
3. Store it: export ACE_MUSIC_API_KEY=<key> or add to TOOLS.md

Quick Generation

Use scripts/generate.sh for one-shot generation:

bash

# Simple prompt (AI decides everything)
scripts/generate.sh "upbeat pop song about summer" --duration 30 --output summer.mp3

# With lyrics
scripts/generate.sh "gentle acoustic ballad, female vocal" \
  --lyrics "[Verse 1]\nSunlight through the window\n\n[Chorus]\nWe are the dreamers" \
  --duration 60 --output ballad.mp3

# Instrumental only
scripts/generate.sh "lo-fi hip hop beats, chill, rainy day" --instrumental --duration 120 --output lofi.mp3

# Natural language (AI writes everything)
scripts/generate.sh "write me a jazz song about coffee" --sample-mode --output jazz.mp3

# Specific settings
scripts/generate.sh "rock anthem" --bpm 140 --key "E minor" --language en --seed 42 --output rock.mp3

# Multiple variations
scripts/generate.sh "electronic dance track" --batch 3 --output edm.mp3

Script outputs file path(s) to stdout. Send the file to the user.

Advanced Usage (curl/direct API)

For covers, repainting, or audio input — see references/api-docs.md for full API spec.

Key task types:

• text2music (default) — generate from text/lyrics
• cover — cover an existing song (requires audio input)
• repaint — modify a section of existing audio

Parameters Guide

Want	Use
Specific style	Describe in prompt: "jazz, saxophone solo, smoky bar"
Custom lyrics	--lyrics "[Verse]...[Chorus]..."
AI writes everything	--sample-mode
No vocals	--instrumental
Longer songs	--duration 120 (seconds)
Specific tempo	--bpm 120
Specific key	--key "C major"
Multiple outputs	--batch 3
Reproducible	--seed 42
Non-English vocals	--language ja (zh, en, ja, ko, etc.)

Notes

• API is free forever (confirmed by ACE Music team)
• Base URL: https://api.acemusic.ai
• Audio returned as base64 MP3, decoded automatically by the script
• Duration: if omitted, AI decides based on content
• For best results, use tagged mode (prompt + lyrics separated)