High School · Music Theory

Key Signature Challenge

Identify key signatures, build confidence and progress to major & minor mastery.

Clef: Questions in this round: Choose your difficulty and round length below, then start the challenge.

Level 1

Question 1/10

Score 0/0

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Which major key uses this key signature?

Choose one answer.

Clefs: Choose Treble, Bass or Mixed in the controls above. In Mixed mode the clef changes from question to question.
How the levels work: Levels 1–3 use major keys only, gradually increasing the number of sharps and flats. Levels 4–6 introduce relative minor keys; you identify the two keys represented by the same key signature.

Key Signature Challenge: a quick guide

Your goal

Look at the sharps or flats at the start of the music and work out the key.

Try an example

One sharp, F♯, can mean G major or E minor. Check whether the question asks for a major or minor key before choosing.

Easy to mix up

For a major key with sharps, go one half step above the last sharp. With two or more flats, the second-to-last flat names the major key. One flat is F major.

A tip for your next go

Learn a few signatures first, then add more. Try learning each major key with its relative minor: they share the same key signature.