🎧 Built for Suno producers & electronic music DJs

Reference track
→ perfect Suno prompt.

Drop any MP3 and get a precise, ready-to-paste Suno prompt — with BPM, key, timbral fingerprint, energy arc and Camelot wheel in 60 seconds.

How it works
25+
detected parameters
60 sec
analysis time
0 credits
wasted on bad prompts
SoundLens — Analysis results · source.mp3
Tempo & Rhythm
BPM
174
TIME SIG
4/4
Pitch & Key
KEY
Am
CAMELOT
8A
Timbral Fingerprint
🥁 punchy kick 🔊 sub bass 🎵 breakbeat ↔ wide stereo ⚡ sidechain ↑
Generated Suno Prompt
dnb, 174 BPM, breakbeat, dark industrial, relentless groove, powerful basslines, aggressive rhythms, distorted synths, deep sub-bass, wide stereo, punchy kick, sidechain pumping...
🎵 Generate prompt
🤖 AI Compact
Freq. Balance
Sub 20–80
53%
Bass 80–300
36%
Mid 300–3k
8%
Features

Every tool a Suno producer needs

From timbral fingerprinting to Camelot-aware set planning — SoundLens turns audio analysis into actionable Suno prompts.

🧬
Timbral fingerprint
Detects kick character (punchy/thumpy/distorted), bass type (sub/reese/mid), rhythm pattern, sidechain, stereo width and harmonic density — all go directly into the prompt.
🎵
AI prompt generator + Compact
One-click prompt from full analysis. Hit 🤖 AI Compact to let Claude Haiku sharpen it into a tight, high-yield Suno prompt under 200 characters.
🎡
Camelot wheel + Set Builder
Plan a full DJ set with real key compatibility. The Camelot wheel highlights compatible neighbours. Each slot auto-generates a context-aware Suno prompt.
🧬
Style Fusion
Blend the sonic DNA of two reference tracks into one hybrid prompt. Set the blend ratio and generate a style that sits exactly between both sources.
👤
Sound profile
Analyze multiple tracks to build your signature sonic profile. All prompts are then anchored to your style — not a generic template.
🗂
Rejection log
Log every Suno generation that didn't land. Over time, SoundLens identifies patterns in what fails and tightens your prompts automatically.
🎸
Stem separation
Split any track into drums, bass, vocals and other — then analyze each stem individually. Drum stem rhythm detection feeds directly into the prompt.
📊
Freq. balance + visualizations
Sub/bass/mid/high energy distribution shown as bars. Plus waveform, energy curve, chroma and spectrogram — see exactly what a track does.
"I drop a reference DnB track, get the timbral fingerprint and paste the prompt straight into Suno. First try success rate went from 20% to ~70%."
— DnB producer, Prague
"The Camelot wheel in Set Builder is a game changer. I can plan an entire 10-track set in 20 minutes and know every transition will work."
— Techno DJ, Berlin
"Style Fusion let me blend two references — Noisia and Mefjus — into one hybrid prompt. The result was exactly the neurofunk vibe I was after."
— Neurofunk producer, Brno
How it works

Reference track → Suno prompt in 4 steps

No configuration, no music theory needed. Just drop the file you want to replicate.

1
Drop your reference
Drag in any MP3, WAV or FLAC — a track with the vibe you want to replicate. Analysis runs in 30–60 seconds.
→
2
Read the sonic DNA
BPM, key, Camelot, LUFS, freq. balance, timbral fingerprint — all categorized. See exactly what makes the track sound the way it does.
→
3
Generate & compact the prompt
One click generates the full Suno prompt from the analysis. Hit AI Compact to sharpen it into a tight, high-yield prompt via Claude Haiku.
→
4
Build your set
Add the slot to Set Builder. The Camelot wheel shows compatible keys for the next track — plan the full set energy arc and transitions.
Pricing

Start free, scale as you need

Core audio analysis is always free. AI-powered features unlock on Pro — using your own API key, so you only pay for what you generate.

Free
$0
forever free
  • Audio analysis (up to 4 min)
  • BPM, key, Camelot, LUFS, DR
  • Timbral fingerprint (kick, bass, rhythm…)
  • Freq. balance bars
  • Waveform, energy & spectrogram
  • Set Builder + Camelot wheel
  • Sound profile (local)
  • AI prompt generation
  • AI Compact (Claude Haiku)
  • Style Fusion
  • Stem separation
⚡ Most popular
Pro
$12 /mo
billed monthly
🔑 Bring your own API key. AI features (prompt generation, cover art) call the AI provider directly using your key — you control costs and usage.
  • Audio analysis (up to 12 min)
  • Everything in Free
  • AI prompt generation (unlimited)
  • 🤖 AI Compact via Claude Haiku
  • Style Fusion (blend 2 references)
  • Stem separation (Demucs)
  • Drum stem → rhythm detection
  • Rejection log + pattern analysis
  • Sound profile (cloud sync)
  • Cover art generator (10/day)

All prices excl. VAT. Cancel anytime.

FAQ

Frequently asked questions

We currently support MP3, WAV and FLAC. The Free plan has a 4-minute file length limit; the Pro plan supports files up to 12 minutes.
No. SoundLens generates a generic text description of the sound — an audio prompt. You can use it in any AI music generator you like. The app is not tied to any specific platform.
Yes. AI features (prompt generation, cover art) use your own API key from the AI provider. This means you have full control over usage and costs — SoundLens never charges you for AI calls on top of the Pro subscription. You add your key once in Settings → Connections.
Audio files are processed on the server and are not stored permanently. Analysis results and your profile are saved locally in the browser (localStorage).
Set Builder is a tool for planning a sequence of songs — whether a DJ set, playlist, or album. Each song slot gets a unique prompt that takes neighbouring songs into account: transitions, key compatibility and the energy arc of the full set.
BPM detection is accurate for most genres with a clear rhythm (dance, electronic, hip-hop). For more complex or subtle genres (jazz, ambient) accuracy may vary — values can always be edited manually. Key is detected using the Camelot system for easy mixing.
Start for free — no credit card

Stop guessing.
Tell Suno exactly what you want.

Drop your reference track. Get the sonic DNA. Paste the prompt. Done.

Open the app