Music Fundamentals I: Pitch, Major Scales & Key Signatures, Rhythm, Meter

Name: AP Music Theory Unit 1: Music Fundamentals I: Pitch, Major Scales & Key Signatures, Rhythm, Meter
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2 lessons · 27 min18 terms

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What this unit covers

The topics below follow the published Music Theory course framework for Unit 1. Music Theory publishes no per-unit weighting, so there is no percentage to chase here.

NotationMajor scalesRhythmMeter

Lessons in this unit

Pitch, the Major Scale & Key Signatures14 min · 3 objectivesName pitches and identify half steps and whole steps between them · Construct any major scale using the whole-and-half-step pattern · Determine a major key signature and place it on the circle of fifths
Rhythm & Meter13 min · 3 objectivesIdentify note and rest values and their proportional relationships · Distinguish simple from compound meter using the time signature · Determine how many beats a measure holds and how each beat divides

Formulas in Unit 1

Major scale step pattern

W – W – H – W – W – W – H (do re mi fa sol la ti do)

Half steps fall between degrees 3–4 (mi–fa) and 7–8 (ti–do). Every major scale, in any key, uses exactly this pattern.

Reading a compound time signature

beats = (top number) ÷ 3 · beat unit = dotted note · division = 3

For 6/8: 6 ÷ 3 = 2 beats (duple), each beat a dotted quarter dividing into three eighths. For 9/8: three beats; for 12/8: four beats.

Every term in Unit 1

All 18 terms we publish for Music Fundamentals I: Pitch, Major Scales & Key Signatures, Rhythm, Meter, with definitions. Reading them through is the fastest way to find the ones you cannot define — then drill those in cram mode until you can produce them without the prompt.

Enharmonic equivalents: Different spellings of the same pitch — C♯ and D♭, F♯ and G♭. Spelling is not arbitrary: it must follow from the key and the function, and a wrong spelling is marked wrong even when the sound is right.
Half step vs whole step: A half step is the smallest interval on the keyboard; a whole step is two of them. Every scale and interval question reduces to counting these correctly.
The major scale as a formula: W–W–H–W–W–W–H. The half steps fall between scale degrees 3–4 and 7–8, which is what makes the leading tone pull upward.
Scale degree names: Tonic, supertonic, mediant, subdominant, dominant, submediant, leading tone. The submediant is the sixth because it sits a third BELOW the tonic, mirroring the mediant above.
Subtonic vs leading tone: A leading tone is a half step below tonic; a subtonic is a whole step below. Natural minor has a subtonic, which is why harmonic minor raises it.
Circle of fifths: Clockwise adds sharps by fifths (C–G–D–A–E–B–F♯–C♯); counterclockwise adds flats by fourths (C–F–B♭–E♭–A♭–D♭–G♭–C♭). The fastest route to any key signature.
Finding a sharp key from its signature: The last sharp is scale degree 7, so the tonic is a half step above it. Four sharps, last is D♯, tonic is E major.
Finding a flat key from its signature: The second-to-last flat names the major key. Four flats — B♭ E♭ A♭ D♭ — gives A♭ major. One flat is F major, which must simply be memorized.
Simple vs compound meter: Simple divides the beat into two, compound into three. In compound meter the dotted note is the beat: 6/8 has two beats, each a dotted quarter, not six beats.
Reading the time signature in compound meter: The lower number gives the DIVISION, not the beat. In 9/8 the eighth note is the division; the beat is the dotted quarter and there are three of them.
Duple, triple and quadruple: How many beats per measure. Combined with simple or compound this names any standard meter: 6/8 is compound duple, 3/4 is simple triple.
Asymmetrical meter: Meters such as 5/8 and 7/8 that divide unevenly, usually 2+3 or 3+2+2. Beaming shows the intended grouping and must be respected when notating.
Anacrusis (pickup): One or more notes before the first downbeat. The final measure is usually shortened by the same value so the two together make one complete measure.
Hemiola: Two measures of triple meter heard as three of duple, or the reverse. Common at cadences in Baroque music and audible as a temporary metric displacement.
Syncopation: Accent placed off the expected beat, by tie, rest or dynamic. On the aural exam it is heard as the pulse being contradicted rather than lost.
Dotted and double-dotted notes: A dot adds half the value; a second dot adds half of the first dot. A double-dotted half equals a half plus a quarter plus an eighth, seven eighths in total.
Beaming rules: Beams group notes to show the beat, and must not cross a beat boundary in simple meter. Correct beaming is scored on the notation question and is a common silent loss.
Clefs: treble, bass, alto, tenor: Alto clef centers middle C on the third line, tenor on the fourth. Both appear in melodic dictation and part-writing, so reading them cold is required.

What examiners penalize here

To name a sharp key fast, take the **last sharp and go up a half step** — that is the tonic (last sharp C♯ → tonic D). For flat keys, the **second-to-last flat is the tonic** (flats B♭ E♭ A♭ → tonic E♭). Memorizing these two tricks saves time on the exam.
Watch the classic trap: **3/4 and 6/8 both contain six eighth notes**, but 3/4 groups them as three beats of two (simple triple) and 6/8 as two beats of three (compound duple). The grouping — not the raw count of eighths — determines the meter and the felt pulse.

Practice Music Theory

Our practice bank is drawn from across the whole course rather than filtered to one unit, which is closer to how the exam asks anyway — it will not tell you which unit a question is testing.

48 practice questionsEvery one with a written explanation FRQ trainerWritten answers scored against the rubric Music Theory study guideAll units, weights and score data in one place All 8 Music Theory unitsThe full course

Questions about this unit

How much of the AP Music Theory exam is Unit 1?

The Music Theory course framework does not publish a per-unit weighting, so there is no percentage to quote for Unit 1 and anyone who gives you one is guessing. Spread your time by where your own errors are instead.

What topics are covered in Music Theory Unit 1?

Music Fundamentals I: Pitch, Major Scales & Key Signatures, Rhythm, Meter covers Notation, Major scales, Rhythm and Meter. We publish 18 terms with definitions for this unit, all of them on this page.

How should I study Music Theory Unit 1?

Read the 2 lessons below first — about 25 minutes — then drill the 18 terms in cram mode until you can produce each definition from memory rather than just recognize it. Recognition is what makes a unit feel finished when it is not. Finish with practice questions and read the explanation for every one you get right by elimination as well as the ones you miss.

All 8 units of AP Music Theory

Unit names, topics and exam weights follow the published College Board course framework for AP Music Theory. AP® is a trademark registered by the College Board, which does not endorse this site.