# HOW TO FIND THE KEY OF A SONG. by ear first, then check it > How to find the key of a song by ear in five steps: hear the home note, test the chords, pick major or minor, then check it with Song Key Finder. Source: https://chordlens.app/guides/how-to-find-the-key-of-a-song Start here · 03 of 06 - Any instrument - Beginner - 7 min read - Updated Oct 2026 - Chord Lens Team The short answer Find the note the song keeps coming home to. Hum it where the chorus ends, then play the song’s chords around it. If they all fit one major or minor scale with that note as home, that is the key. To check it in seconds, paste the link into Song Key Finder. 01 / 06 · TRY IT ## Hear the home note. Every key has a home: one note, and one chord built on it, that the rest of the song leans back towards. The melody wanders away from it and the chords move around it, but the end of a chorus usually lands there, and when it does the song sounds settled. Finding the key is mostly finding that place. Put on a song you know well and listen to the last line of the chorus. Stop it on the final chord and let it ring. Does it feel finished, like the full stop at the end of a sentence? Or does it feel like it wants to go somewhere else? If it feels finished, that chord is very likely the home chord, and its root note names the key. Now try the opposite. Stop the song in the middle of a line, on a chord that’s moving. You’ll hear the pull: the music leans forward, waiting for something. That pull is what you’re listening for. Once you can hear the difference between leaning and resting, the rest of this guide is just naming what you hear. You don’t need perfect pitch for this, or any theory yet. You need a song, an instrument or a keyboard app, and a few minutes. If you can hum a note and then find the same note by trying frets or keys until they match, you can find the key of a song. 02 / 06 · METHOD ## Find it in five steps. Here is the whole method. It works on guitar, piano, bass or anything else that plays notes, and it gets quicker every time you use it. Step 3 is where a guess becomes an answer. A major key has six chords that do most of the work. In G major they are G, Am, Bm, C, D and Em (there is a seventh, F♯dim, but pop songs rarely use it). If the chords you hear are G, C, D and Em, you are in G major or in its relative minor, E minor, and the home chord decides which. Don’t throw out a guess because of one stray chord. Songs borrow colour from nearby keys: an A major or a B♭ in a song in G is a visitor, not a new key. Go with what most of the chords say. There is a quick test once you have a guess. Hold your home note, or strum its chord softly, and let it ring under the whole chorus. In the right key it sits comfortably under almost everything and only rubs for a moment on passing chords. In the wrong key it clashes again and again. Move it up or down a fret and try once more; the right one is obvious when you hit it. In the screenshot, the Studio’s demo song reads Key B, and the four chords above its chart, B, E, F♯ and G♯m, are the I, IV, V and vi of B major. That is the pattern you’re listening for: a home chord and the few chords that orbit it. 1. **Listen for the resting place** Play the chorus and stop on its last chord. The note you’d hum to finish the line is your first guess. 2. **Hum it, then find it** Hum that note and find it on your instrument, one fret or key at a time, until the two sound the same. Slow the song to 0.75× if it moves too fast to catch. 3. **Test it against the chords** Work out a few of the song’s chords, or read them. Most of them should belong to that note’s major or minor scale. 4. **Decide major or minor** A bright home chord means major. A darker, sadder one means minor. The next section tells you which when the chords fit both. 5. **Check it in one click** Paste the link into Song Key Finder. If you were close, you’ll see why straight away. ![The Chord Lens Studio song header for the demo song Coming Home: Key B and 143 BPM side by side, and the chord shapes B, E, F♯ and G♯m above the chart.](https://chordlens.app/assets/guides/how-to-find-the-key-of-a-song/studio-key-bpm.webp) The key Tempo in BPM Chords in that key 03 / 06 · MAJOR / MINOR ## Bright or dark? Trust the home chord. C major and A minor use the same seven notes, so the chords alone can fool you. What settles it is where the song rests. If the chorus lands on C and feels finished, it’s C major. If it lands on Am and feels finished, it’s A minor. Every major key has a relative minor that shares its notes, three semitones below it: G major and E minor, D major and B minor, F major and D minor. When the chords fit both, play both candidate chords under the last line of the chorus. One of them sounds like the end of a sentence. That’s the home chord, and its name is the key. Minor keys often leave one more clue. Their V chord is usually played major, which borrows a note from outside the scale to pull harder towards home. In A minor that is E major, whose G♯ wants to rise to A. So if a song built mostly from Am, C, F and G also has an E major in it, that E is pointing at A minor. Mood is a fair first hint, but only a hint. Bright and settled usually means major; darker or sadder usually means minor. Plenty of sad songs are in major keys, though, so let the home chord decide, not the lyric. Can’t hear it over the band? Split the stems and mute the vocals and drums. The bass plays the home note more than any other part. 04 / 06 · HARD SONGS ## When the key won’t sit still. **The song changes key.** A common move is a lift of a semitone or a whole tone for the last chorus. Treat each part on its own: find the home of the verse, then of the final chorus. Song Key Finder names one key per song, the one the whole recording sounds most like, so a song with a late lift shows its main key. The chart still shows the chords where it moves, so you can hear the change yourself. **The song rests on a chord that doesn’t fit.** Some rock and folk songs sit on a home chord while borrowing chords from another key: a riff that keeps coming back to D but uses C and G around it sounds like D, even though those notes come from G major. Name the key after where the song rests. That is the musician’s answer, whatever a chart says. **Your note sits between two frets.** Not every record is at standard pitch. Some bands tune down a semitone, and older recordings can run a little sharp or flat. Pick the nearer note; that’s the key you’ll play in against the record. **The player in the video uses a capo.** The shapes you see aren’t the key you hear. A guitarist playing G shapes with a capo on the 2nd fret sounds in A. Find the key from the sound, not from their hands. The [capo chart](https://chordlens.app/guides/capo-chart) lists every fret. Once you know the key, you can move it. [Change Song Key](https://chordlens.app/change-song-key) moves the song up or down by semitones and re-spells every chord, with a capo to match on guitar. If a song sits too high to sing, that’s usually the next thing you want. Next in this path: [how to find the BPM of a song](https://chordlens.app/guides/how-to-find-the-bpm-of-a-song), the other number every chart starts with. 05 / 06 · Do it in one click ## Song Key Finder Paste a YouTube link. The key and BPM sit above the chords, and you can move either one. [Open Song Key Finder](https://chordlens.app/song-key-finder) [Open the Studio](https://chordlens.app/studio) 06 / 06 · Quick answers ## Quick answers. the short answers ### Still stuck? Open the Studio and send us a note with Feedback in its sidebar. A person reads every one. [Send feedback](https://chordlens.app/studio?feedback) ### Is the key always the last chord? Often, not always. Many songs end on the home chord, but some fade out or end on a surprise. Trust the chord that feels like rest, not just the last one. ### What if the song changes key? Find the home of each part separately. Song Key Finder shows one key for the whole song, the one the recording sounds most like, and the chart shows the chords where it moves. ### Do I need perfect pitch? No. You need to match a note you hum to a note on your instrument. That is relative pitch, and it gets better with practice. Slowing the song down helps while you learn. ### How accurate is Song Key Finder? Songs with a clear band and steady harmony get the right key most of the time. It works the key out from the chords, so a song with no clear harmony or a key change is harder. Check it by ear. ### How do I move a song into my key? Use Change Song Key: move the song up or down by semitones and every chord on the chart is re-spelled, with a capo to match on guitar, ukulele or mandolin. ### What’s the difference between a key and a scale? A scale is a set of notes. A key is that set plus a home note the music settles on. C major and A minor share a scale but are different keys. ### Does it find the BPM too? Yes. The tempo in BPM sits beside the key, counted from the song’s beats, with the time signature when it was measured. ## Keep going [Previous in Start here **02** Find the chords](https://chordlens.app/guides/how-to-find-chords-of-a-song) [Next in Start here **04** Find the BPM](https://chordlens.app/guides/how-to-find-the-bpm-of-a-song) ### Related guides - [Chords and keys · Guitar · Ukulele Capo chart 5 min](https://chordlens.app/guides/capo-chart) - [Chords and keys · Any instrument Transpose chords 7 min](https://chordlens.app/guides/how-to-transpose-chords) - [Start here · Any instrument Learn songs by ear 8 min](https://chordlens.app/guides/how-to-learn-songs-by-ear)