Find the Chords Behind Any Song
Upload any song’s audio or video file to detect chords, key, tempo and time signature. Visualize the complete chord progression with timing, piano and guitar chord shapes, multiple analysis models for instrumental and vocal tracks and download your results.
Drop a song here, or upload one
Turn any audio or video file into a bar-by-bar chord chart with the song’s key, tempo and time signature. Play along, transpose and download as PDF or text.
Everything below is ready to use: choose the model and chord complexity, then upload your track.
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Chord chart
Click a chord to jump there, or its arrow to see how to play it.
Your chord chart will appear here, laid out on the song’s beat.
How It Works
What is an Audio-to-Chords Extractor?
An Audio-to-Chords Extractor is a smart music analysis tool that converts audio file into accurate chord progressions. It listens to your track, detects harmonic changes and transforms the sound into clear, readable chords.
How to Use Our Audio-to-Chords Extractor :
Upload Your Song’s Audio /Video File : Simply drag and drop your audio files to get started.
Automatic Chord Detection : Our intelligent engine analyzes the track and extracts accurate chords in real time.
Key & Confidence Analysis : Instantly identify the global key, BPM, time signature and see confidence levels for reliable results.
Timeline Visualization : View chords mapped across the song timeline for easy tracking and practice, with piano and guitar chord shapes displayed alongside each chord.
Section-Based Breakdown : See chord changes bar-by-bar or section-by-section for deeper musical understanding.
Download & Share : Export your complete chord map with piano, guitar etc. shapes for printing, sharing or further editing.
Our Audio-to-Chords Extractor simplifies music learning by turning complex audio into clean, structured chord progressions – making practice, performance, and songwriting easier than ever.
Important Note :
This is a beta version. A more advanced chord prediction engine is coming soon!
Accuracy is near 100% for instrumental tracks and regular songs. For complex songs (reharmonized or unusual tracks), you can select and fine-tune different analysis models available in the app to get the best results. Improvements for complex songs are continuously in progress.
Harmonic Event Detection
This application uses a high-precision Goertzel Algorithm to isolate the core energy of the 12 chromatic notes across multiple octaves in your audio. Unlike fixed-bar systems, our engine scans for Harmonic Transitions—identifying the exact moment a tonal shift occurs. By mapping these frequencies against the Krumhansl-Schmuckler pitch-class profiles via Pearson Correlation, the app identifies the most likely chord used at that specific timestamp.
The Confidence Number
The small circle on each chord box represents the Statistical Correlation Score (0–100). This value indicates how closely the audio signal in that segment matches the mathematical template of a specific chord.
- 80–100: High confidence; the audio clearly aligns with a major or minor triad.
- Below 50: Low confidence; this may occur during complex passages, fast transitions, or where there is significant background noise.
You can report directly via our Contact Form or email us at below emails.