AI Chord Finder — See the Chords of Any Song

The Chord Finder, at a Glance

• 🎼 Chords of any song, read from the audio by AI
• ⏱️ Synced to the music — click a chord to jump there
• 🔑 Key detected from the chords, plus the real BPM
• 🎸 Guitar diagrams — easy or barre voicings
• ▶️ Works on your files or a YouTube link
• 🎚️ Isolate, loop, slow down and re-key in the same player
• 🔒 Runs on your device, nothing uploaded
• 💸 Free to get started — Pro from $5.95/mo

What Is an AI Chord Finder?

An AI chord finder (also called a chord detector or chord identifier) listens to a recording and works out which chords are being played, then shows them as the song plays. Instead of searching for tabs someone else wrote — and hoping they exist and are right — you get a chord chart read from the actual audio.

Riffloop shows the chords on a timeline under the player, highlights the one sounding now, and lets you click any chord to jump straight to it. Because the chords come from the recording itself, it works on any song — deep cuts, live covers, your band's rehearsal recording, even AI-generated tracks with no tabs anywhere.

How Does AI Chord Detection Work?

The AI analyzes the recording's harmonic content moment by moment — which pitches are sounding and how strongly — and recognizes the chord they add up to, the way a trained ear does. A second pass tracks the song's beats, so each chord change lands where the music actually changes, not on an arbitrary grid.

That's a different thing from a chord database: nothing is being looked up. It's also why two ingredients decide the quality of the result — how clearly the harmony is voiced in the mix, and how steady the groove is. A clean pop or worship track reads almost like sheet music; a wall of distorted guitars is harder to hear, for the AI and for you. Riffloop separates the song into stems first, which is also what lets you verify any chord by ear — more on that below.

How to Get the Chords of Any Song

Load the song — a file or a YouTube link — let the AI listen once, then read the chart under the player. Five steps, nothing to install, and the one-time AI setup on your first song is the slowest part.

1. Load the song. Drop an audio file above, or open the Studio and paste a YouTube link.
2. Let the AI listen. The song is separated into stems and analyzed on your device — chords, key and BPM come out of one pass.
3. Read the chords as it plays. The chart sits under the player, synced to the music; the current chord is highlighted, and clicking a chord jumps the song there.
4. Open the chord shapes. Switch to the diagram view to see the current and upcoming guitar shapes — easy or barre voicings, your pick.
5. Practice it. Loop the change that trips you up, slow it down with the pitch held, isolate the instrument, or transpose — the chords follow the new key.

This also works right on the YouTube page, without opening the Studio. Mute the instrument you want to play and follow the same chord shapes live — our guide to getting the chords to any YouTube song walks through it step by step.

If the Song Is on YouTube

You don't have to upload anything. Paste the link into the Studio, or read the chords on the video itself with the free Chrome extension — either way the audio is analysed on your device, with no download and no upload.

That case has its own guide, because it works differently and it has its own quirks: the YouTube chord finder covers reading chords on the video, why analysing the audio beats looking a chart up, and what to do when a chord looks wrong. This page stays on the general job — chord detection itself, and getting the chords of a file you already have.

The Key, the Real BPM, and a Click That Locks to the Song

Every analysis also tells you the song's key and its real tempo. The key is worked out from the detected chords themselves — steadier than guessing from raw audio — and the BPM comes from AI beat tracking of the actual performance, so a song that sits at 77 BPM reads 77, not a rounded 80.

The beats do more than fill a readout: chord changes snap to them, so the chart lines up with the bars you're counting. Pro users can lock the metronome to the song's tracked beats — the click lands with the actual drums, accents on the real downbeats, and it stays locked when you slow the song down. If you've only ever practiced against a free-running click, a song-locked one is a different experience.

• 🔑 Key detected from the chords — flats spelled like a musician would (E♭, not D♯)
• 🥁 Real BPM from the performance, not a rounded guess
• 🎯 Chord changes snapped to the actual beats
• 🕰️ Beat-locked metronome with real downbeat accents (Pro)

Guitar Diagrams — and Chords That Follow Your Key

Every detected chord comes with a guitar diagram, in your choice of easy open-position voicings or barre shapes, and the diagram view shows what's playing now and what's coming next. Chord names work for any instrument — pianists and bassists read the same symbols.

The part most chord tools miss: when you transpose the song to fit your voice or an easier set of shapes, Riffloop's chords and diagrams move with it — symbols respelled correctly for the new key, shapes updated to match. Shift a song two semitones down and you're not doing capo math in your head; the chart already agrees with what you're hearing.

How Accurate Is AI Chord Detection?

Good enough to practice from on most songs, and honest enough to say where it isn't: no chord AI — ours or anyone's — hears everything. On clearly-voiced pop, rock, folk and worship music, expect most chords and their change points to be right. On dense mixes and jazz harmony, expect a map of the changes, not a transcription.

Riffloop currently reads harmony at the major/minor level — the "easy chords" view other tools default to. That's the level play-along practice actually uses, but it means a Cmaj7 displays as C and a Dsus4 as D. Here's what to expect by material:

One more honest note: different chord apps will show different chords for the same song, because each uses a different AI, a different simplification policy and a different beat grid. The recording is the truth — which is why the next section exists.

When a Chord Looks Wrong, Check It With Your Ears

Treat any AI chord chart as a very fast first draft. When a chord sounds off, solo the instrument playing it — the guitar or piano stem — loop that bar, slow it down, and listen for the bass note first, then the chord's color. In Riffloop, all of those moves live in the same player as the chords.

This check is also a skill worth owning. Our guide to finding the chords of a song by ear teaches the manual method — root from the bass, then major or minor by color — and the chord finder makes a great training partner for it: work the chord out yourself, then peek.

Chords Inside a Practice Studio, Not a Static Chart

Most chord tools hand you a chart and stop. Riffloop's chords live inside a full practice studio — the same player that isolates instruments, loops sections, slows the song down and changes its key. Reading the changes is step one; actually learning them is what the rest of the studio is for.

1. Get the chart. Chords, key and BPM from one analysis.
2. Loop the change that trips you up. Set an A-B loop around the two bars where the progression turns.
3. Slow it to 70–80%. The pitch stays put, so the chords don't move — only the tempo does.
4. Hear the part on its own. Isolate the guitar or piano stem to catch the exact voicing — or mute it and take its place.
5. Put it in your key. Transpose the song and play the shapes the chart now shows.
6. Bring the tempo back up. Raise the speed in steps until the change is clean at full tempo.

Riffloop vs. Other Ways to Get a Song's Chords

The short version: catalog sites and mobile apps show you chords; Riffloop puts the chords inside a practice player — with stem isolation, looping, slow-down and key change — and runs on your device instead of a server.

Chord catalog sites are great when a popular song is already well-transcribed, and mobile chord apps are handy away from a desk. Here's what each kind of tool actually gives you when you want the chords of the song in front of you:

Built for Players Who Learn From Records

Anyone who'd rather play the song than hunt for its chords. Perfect for:

Riffloop AI Chord Finder, in One Table

Frequently Asked Questions

Continue Improving Your Music Practice

• 👂 Find the chords of a song by ear — the manual method the chord finder trains you toward
• 🔑 Find the key of a song by ear — hear the home note the analyzer names for you
• 🎸 Guitar stem splitter — isolate the guitar to check a voicing or learn the part
• 🎹 Piano stem splitter — hear the piano's exact chords and voicings alone
• 🎼 Song key changer — transpose the track; the chords follow
• 🐢 Slow down songs — drill a fast change with the pitch held
• 🔁 Loop a YouTube video — A-B repeat the two bars that matter
• 🏠 Riffloop Practice Studio — everything above in one player