Music Theory Trivia Questions and Answers

Staves, semitones, tempo markings and time signatures — these music theory questions cover the building blocks behind every song. Each comes with a short, plain-English explanation, so you don't need to read music to learn something. Handy for students brushing up on the basics, or anyone curious about how music works.

6 questions · Every answer explained · Fact-checked October 2026

1. 1. How many lines make up a standard musical staff?

   • A. 4
   • B. 5
   • C. 6
   • D. 7
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   B. 5 — A standard musical staff has five horizontal lines, with notes placed on and between them.

2. 2. In sheet music, the Italian term 'adagio' instructs a piece to be played how?

   • A. Very fast
   • B. Slowly
   • C. Loudly
   • D. Softly
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   B. Slowly — Adagio is a tempo marking indicating the music should be played slowly.

3. 3. How many semitones make up one octave?

   • A. 7
   • B. 8
   • C. 10
   • D. 12
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   D. 12 — Western music divides the octave into 12 equal semitones.

   Did you know? On a piano, that's every white and black key from one C up to the next.

4. 4. In sheet music, which Italian term means 'gradually getting louder'?

   • A. Diminuendo
   • B. Staccato
   • C. Legato
   • D. Crescendo
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   D. Crescendo — Crescendo tells the performer to increase volume gradually.

   Did you know? The opposite is diminuendo or decrescendo — gradually getting softer.

5. 5. In which time signature is a traditional waltz written?

   • A. 2/4
   • B. 3/4
   • C. 4/4
   • D. 6/8
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   B. 3/4 — A waltz has three beats per bar, with the accent on the first.

   Did you know? Johann Strauss II's The Blue Danube is perhaps the most famous waltz of all.

6. 6. What is the standard concert pitch for the A above middle C?

   • A. 415 Hz
   • B. 432 Hz
   • C. 440 Hz
   • D. 444 Hz
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   C. 440 Hz — A440 is the international standard tuning pitch for the A above middle C.

   Did you know? Baroque period ensembles often tune lower, to A415.