Key signature worksheets

How to use the worksheet generator

1. Choose major keys, minor keys or both; the clef (treble, bass or a mix); and the exercises: name the key, write the signature, or both.
2. Choose the level and how many questions: 10, 20 or 30. Give the sheet a title if you like.
3. Press Generate. Every worksheet is new, and stays exactly as it is until you generate another.
4. Download the worksheet PDF to print, and the answer key PDF to check it. Both are US Letter or A4, black and white, and carry the same worksheet code, so a key never gets matched with the wrong sheet.
5. Or press Practise online: pick the key from four names, or pick the right signature from four staves, with instant feedback and a score at the end.

The page keeps your worksheet if you reload it, and Copy link gives you an address that brings the same questions back. Your title stays in this browser tab only, and nothing you type is sent anywhere.

What a key signature is

A key signature is the group of sharps or flats written at the start of every line of music, just after the clef. Each one applies to every note with that letter name, in every octave, for the whole piece — so a piece in D major does not need a sharp in front of every F and C: the signature says it once. A signature never mixes sharps and flats, and there are fifteen of them, from seven flats to seven sharps. The key signatures lesson explains why each key needs the accidentals it has.

The order of sharps and flats

Sharps are always added in the same order: F C G D A E B. A signature with three sharps is always F♯, C♯ and G♯ — never any other three. Flats come in exactly the reverse order: B E A D G C F. A common way to remember both is Father Charles Goes Down And Ends Battle, read backwards for the flats: Battle Ends And Down Goes Charles’ Father. The guide to memorising key signatures has more ways in.

Each sharp and flat also has a fixed place on the staff. Sharps zig-zag down from F on the top line of the treble staff; flats zig-zag up from B on the middle line. In bass clef the shape is the same, one line lower. On the write the signature questions, the order and the places both count — they are what a reader looks for.

How to identify a key from its signature

• No sharps or flats: C major (or A minor).
• Sharps: the last sharp is the seventh note of the major key, so the key is one semitone above it. Last sharp C♯ → D major.
• Flats: the second-to-last flat names the major key. Flats B♭ E♭ A♭ → E♭ major. The one to learn by heart: one flat is F major.

Minor keys share their signature with a major key — its relative minor, which starts on the major key’s sixth note, three semitones below its tonic. Two sharps is D major or B minor. That is why every question on these worksheets says which one it wants: “Name the major key” or “Name the minor key”. In real music, the piece itself decides — the how to find the key lesson shows how.

Three signatures have two names. Five sharps (B major) sounds the same as seven flats (C♭ major); six sharps (F♯ major) as six flats (G♭ major); seven sharps (C♯ major) as five flats (D♭ major). They are written differently, so they are different answers: a signature with six flats is G♭ major, never F♯ major. The circle of fifths shows where the two sides meet.

How the difficulty levels work

The levels differ in which signatures they use. Every signature is one of the fifteen standard ones, and every question names whether it wants the major or the minor key.

• Beginner uses the keys most method books teach first — up to three sharps or flats — and mostly asks you to name the key. None of these keys has a second name, so there is no enharmonic trap.
• Intermediate adds four and five sharps or flats (E, B, A♭, D♭ major and their minors), with naming and writing in equal measure.
• Advanced uses all fifteen signatures, including the pairs that sound alike — B and C♭, F♯ and G♭, C♯ and D♭ major — each with its own answer.

At every level each key comes round once before any key repeats, the same signature never appears twice in a row, sharps and flats are evenly mixed, and on a mixed sheet each clef gets both kinds of question.

How to practise effectively

• Learn the orders first. Once F C G D A E B and B E A D G C F are automatic, every signature can be worked out instead of remembered.
• Read, then write. Naming a key from a signature is easier than writing one; once you score well naming, switch to writing, where the order and the places on the staff both count.
• Major first, then minor. Learn the major keys, then find each relative minor three semitones down. Mix them only when both feel secure.
• Retry the same sheet. After practising online, press Retry: the same keys again show what has stuck. Move up a level when you score 90% or more twice in a row.
• Little and often. Ten questions a day does more than a long session once a week.

Using the printable worksheets

For teachers: generate a sheet per lesson or per student — each one is different, so neighbours cannot copy — and keep the answer key, which carries the same worksheet code. Every staff is long enough to write seven sharps or flats by hand, and the Name, Date and Score lines are on every student copy.

For parents: you do not need to read music to help. The answer key names every key, and for each signature to write it lists the sharps or flats in order, so you can check the sheet together.

For students: print a sheet for when you are away from a screen, or practise the same questions online and get each answer checked straight away. To revise notes on the staff first, try the note reading worksheets.

Questions and answers

Are the worksheets free?

Yes. Generate, practise and download as many as you like, with no account and no email address.

Why does each question say major or minor?

Because every signature belongs to two keys: a major key and its relative minor. “What key is this?” has two right answers; “Name the minor key” has one.

Is F♯ major the same answer as G♭ major?

No. They sound the same on a piano, but F♯ major has six sharps and G♭ major six flats — different signatures, different names. The worksheets always expect the key the signature actually spells.

How do students answer the “write the signature” questions online?

On paper they write the sharps or flats on the staff. Online, they choose the right signature from four staves — the choices are real signatures that are easy to confuse, such as two sharps and two flats, or one accidental too many.

Can I print the same worksheet again later?

Yes, while you keep its link: after you generate a worksheet, the address of this page includes its code, and opening that address brings back the same questions. Use Copy link, bookmark it, or simply keep the PDF.

Which paper size should I choose?

US Letter in the United States, Canada and much of the Americas; A4 almost everywhere else. The page picks one from your browser’s language; either prints with the same margins.

Where can I look up every key signature?

The keys reference has a page for every major and minor key, with its signature, scale and chords.