Key Signature Tutorial
Learn to identify key signatures by reading the sharps and flats at the beginning of the staff.
How to Play
The Key Signature game shows you sharps or flats on a staff and asks you to name the key.
Look
Read the sharps or flats displayed on the staff at the beginning of the piece.
Count
Count how many sharps or flats you see. This tells you which key you're in.
Identify
Select the correct major or minor key from the answer buttons.
Track Progress
Your score, accuracy, and streak are saved. Increase difficulty to add flat keys and minor keys.
What Is a Key Signature?
A key signature is a set of sharps or flats placed at the beginning of a staff, right after the clef. It tells you which notes are consistently raised or lowered throughout the piece, defining the key of the music.
Instead of writing a sharp or flat symbol every time a note appears, the key signature applies it automatically. For example, if there's one sharp (F♯) in the key signature, every F in the piece is played as F♯ unless marked otherwise.
Order of Sharps & Flats
Sharps always appear in this order: F — C — G — D — A — E — B
Mnemonic: Father Charles Goes Down And Ends Battle
Flats always appear in reverse order: B — E — A — D — G — C — F
Mnemonic: Battle Ends And Down Goes Charles' Father
| Sharps | Major Key | Minor Key |
|---|---|---|
| 0 (none) | C Major | A minor |
| 1 (F♯) | G Major | E minor |
| 2 (F♯ C♯) | D Major | B minor |
| 3 (F♯ C♯ G♯) | A Major | F♯ minor |
| 4 | E Major | C♯ minor |
| 5 | B Major | G♯ minor |
| 6 | F♯ Major | D♯ minor |
| 7 | C♯ Major | A♯ minor |
| Flats | Major Key | Minor Key |
|---|---|---|
| 1 (B♭) | F Major | D minor |
| 2 (B♭ E♭) | B♭ Major | G minor |
| 3 | E♭ Major | C minor |
| 4 | A♭ Major | F minor |
| 5 | D♭ Major | B♭ minor |
| 6 | G♭ Major | E♭ minor |
| 7 | C♭ Major | A♭ minor |
Quick Identification Tricks
- For sharps: The last sharp is always one half step below the major key. For example, if the last sharp is F♯, the key is G Major.
- For flats: The second-to-last flat is the major key. For example, if you see B♭ and E♭, the key is B♭ Major. (Exception: one flat = F Major.)
- For minor keys: Every major key has a relative minor that shares its key signature. The relative minor is 3 half steps below the major key (e.g., C Major → A minor).
Difficulty Levels
Beginner
- Sharp keys only (0–4 sharps)
- Major keys only
- 5 possible answers
Intermediate
- Sharp and flat keys (up to 5 each)
- Major keys
- 11 possible answers
Advanced
- All 15 key signatures
- Major and minor keys
- Full identification challenge
Ready to Identify Key Signatures?
Start practicing with the interactive game!