Song Key Finder
Select the notes you hear in a song and instantly identify the musical key — major or minor. Free, no signup required.
- Listen to your song and hum or play along to identify the notes used
- Click each note you hear to select it (click again to deselect)
- Select at least 3–4 notes for a reliable result — more is better
- Click Find Key to see the top matching keys
Tip: Focus on the melody notes and the bass notes — they are the most diagnostic for key identification.
Select the Notes You Hear
Key Analysis Results
How Song Keys Work
A song's key is the tonal centre — the note and scale that the music gravitates toward. Most Western music uses either a major scale (bright, happy sound) or a minor scale (darker, more emotional sound), each built from 7 of the 12 available notes.
Identifying the key matters for singers because it tells you whether the song sits in a comfortable part of your range. Knowing the key also means you can transpose — shift the song up or down to suit your voice — by a predictable number of semitones.
Why Keys Matter for Singers
- Find songs in your tessitura
- Transpose to suit your range
- Communicate with accompanists
- Understand song structure
Relative Major & Minor
Every major key shares its notes with a relative minor key starting 3 semitones lower. For example, C Major and A Minor use the same 7 notes — the tonal centre (which note feels like "home") determines which key the song is in.
Find Songs That Fit Your Voice
Once you know a song's key, compare it to your vocal range. Take the full voice type test to know exactly what range suits you.
Find Your Voice Type →Best Keys for Each Voice Type
The "best key" for a singer is the one where the melody sits in their tessitura — the comfortable core of their range. This table shows typical key preferences for each voice type.
| Voice Type | Comfortable Melody Range | Comfortable Keys (Pop/Songs) |
|---|---|---|
| Soprano | C4 – G5 | D, E, F, G Major / minor |
| Mezzo-Soprano | A3 – E5 | B♭, C, D, E♭ Major / minor |
| Contralto | F3 – C5 | G, A, B♭ Major / minor |
| Tenor | C3 – G4 (head to A4) | E, F, G Major / minor |
| Baritone | G2 – E4 | B♭, C, D Major / minor |
| Bass | E2 – C4 | G, A, B♭ Major / minor |
If a song is in a key that's too high or too low, transpose by semitones: each semitone up raises all notes by one half-step. To move from C Major to B♭ Major, transpose down 2 semitones. Your accompanist, pianist, or capo guitar can do this for you.
Famous Songs by Key
Recognising familiar songs in a key helps you calibrate your ear and understand how that key feels emotionally and vocally.
| Key | Mood / Character | Famous Songs |
|---|---|---|
| C Major | Pure, simple, neutral | Let It Be (Beatles), Twinkle Twinkle, Jingle Bells |
| G Major | Bright, country, open | Sweet Home Alabama, Country Roads, Knockin' on Heaven's Door |
| D Major | Triumphant, energetic | Rolling in the Deep (Adele), Thriller, Livin' on a Prayer |
| A Major | Joyful, bright pop | Brown Eyed Girl, Here Comes the Sun, Perfect (Ed Sheeran) |
| E Major | Brilliant, intense | Don't Stop Believin' (Journey), Hotel California |
| A Minor | Dark, melancholic, popular | Stairway to Heaven, Scarborough Fair, House of the Rising Sun |
| D Minor | Brooding, dramatic | Smoke on the Water, Eleanor Rigby, All Along the Watchtower |
| E Minor | Sad, introspective | Nothing Else Matters (Metallica), Yesterday (Beatles) |
Frequently Asked Questions
What key is best for my voice? +
The best key is where the song's highest notes sit in your comfortable upper range — not at your ceiling. A soprano might find many songs work best in D–G Major; a baritone in B♭–D Major. Use the vocal range test to find your range, then transpose accordingly.
How do I transpose a song to a different key? +
Transposing moves every note up or down by the same number of semitones. If a song is in E Major and you need it in C Major, transpose down 4 semitones. Guitar players use a capo; pianists shift all notes; singers can simply ask their accompanist for the new key.
What is a relative minor key? +
Every major key has a "relative minor" that uses the exact same notes. C Major and A Minor share the same 7 notes — C D E F G A B — but feel different because the tonal centre shifts. The relative minor starts 3 semitones below the major key's root.
Why might this tool show the wrong key? +
Key detection from note selection is inherently ambiguous — multiple keys can use similar sets of notes. Selecting more notes (5–7 is ideal) improves accuracy. Also, songs with key changes or borrowed chords may not fit cleanly into any single key.