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♫Cifra Agora
Audio analysis

Song chord finder

Upload a song and automatically detect chord changes and harmonic progression.

⚙ Optimized processing

Drop audio here or click to chooseMP3, WAV, M4A or OGG · up to 20 minutes for automatic chord sheets
Click this box or drag the audio anywhere on this page.
cifragora.com
cifragora.com

About this tool

Use the harmonic analyzer to get a likely chord timeline.

How to use

  1. Choose the audio file.
  2. The tool builds a reduced harmonic representation and detects chords.
  3. Listen back, review the timeline and copy or download the progression.

How chords are estimated

The tool compares short sections of the recording and looks for note combinations that resemble known chords.

The system then smooths very fast changes so passing notes are less likely to become a new chord every fraction of a second.

What can confuse detection

Bass notes, melody, vocals and effects may introduce notes that do not belong to the basic chord label. Inversions and extended chords can also have more than one reasonable interpretation.

Use the timeline as a guide and confirm difficult moments by listening. When a label looks wrong, compare the previous chord, the next chord and the bass movement before editing.

  • Inversions may resemble a different root chord
  • Distortion and reverb reduce harmonic clarity
  • Modulations require more contextual interpretation

How to use the result

Once you have a sequence, you can move it into the transposer, simplifier or capo calculator. For practice, play along with the recording and correct only the points where the suggested harmony clearly disagrees with what you hear.

Chord detection is not a replacement for a detailed musical transcription, but it can substantially shorten the first stage of figuring out a song.

Frequently asked questions

Does it work with every song?

It works best when the harmony is clear. Dense arrangements, heavy distortion, jazz voicings and modulation can reduce accuracy.

Do I need to install anything?

No. Open the tool and choose the song.

Do I need to install software?

No. Open the tool and choose the song.