Treble Clef (Right Hand)

The treble clef marks the G line — the second line up from the bottom. From there, every line and space going up gives you: E, F, G, A, B, C, D, E, F (bottom line to top line = E, G, B, D, F — "Every Good Boy Deserves Fruit"). Spaces = F, A, C, E (FACE).

Bass Clef (Left Hand)

The bass clef marks the F line — the second line from the top. Lines bottom to top = G, B, D, F, A ("Good Boys Deserve Fine Apples"). Spaces = A, C, E, G ("All Cows Eat Grass").

Middle C

Middle C sits on a short ledger line between the two staves — one ledger line above the bass staff, or one ledger line below the treble staff. It is the same note. The stave you find it on tells you which hand plays it.

The Note Value Tree

Each note value divides exactly in two: one semibreve (whole note, 4 beats) = 2 minims (half notes, 2 beats each) = 4 crotchets (quarter notes, 1 beat each) = 8 quavers (eighth notes, ½ beat each) = 16 semiquavers (sixteenth notes, ¼ beat each). Every duration is a halving or doubling of another.

Dotted Notes

A dot after a note adds half its value again. A dotted minim = 2 + 1 = 3 beats. A dotted crotchet = 1 + ½ = 1½ beats. A dotted quaver = ½ + ¼ = ¾ of a beat. Dotted notes always pair with the next shorter value: dotted quaver + semiquaver = 1 beat total.

Ties and Rests

A tie joins two notes of the same pitch — you hold for the combined value, but only strike the key once. A slur looks the same but connects different pitches and means legato. Every note value has a matching rest. Rests are silence — but they still count.

What the Two Numbers Mean

The top number tells you how many beats are in each bar. The bottom number tells you what type of note gets one beat — 4 means a crotchet (quarter note), 8 means a quaver (eighth note), 2 means a minim (half note). So 3/4 = 3 crotchet beats per bar. 6/8 = 6 quaver beats per bar.

Simple vs Compound Time

In simple time (2/4, 3/4, 4/4), each beat divides into 2. In compound time (6/8, 9/8, 12/8), each beat divides into 3. The real beat in 6/8 is the dotted crotchet — there are 2 beats per bar, each made of 3 quavers. Most students count 6/8 as 6 even beats and then wonder why it feels wrong. Count it as 2 with a swing.

Common Time Signatures

The Pattern

Every major scale uses the same pattern of tones (T) and semitones (S): T T S T T T S. A tone = 2 semitones (e.g. C to D). A semitone = 1 semitone (e.g. E to F, or B to C on the piano). Apply this pattern starting from any note and you get that major scale.

Building from Tetrachords

Each major scale is made of two identical 4-note patterns (tetrachords): T T S. C major: C D E F | G A B C. The top tetrachord of C major (G A B C) becomes the bottom tetrachord of G major. Add F♯ to complete G major's top tetrachord (G A B C | D E F♯ G). This is why each key adds one more sharp.

Major Scales to Know (Grade 1–4)

Three Types

Every minor key has three versions of its scale. Natural minor: the scale as it comes from the key signature — no alterations. Harmonic minor: raise the 7th degree by a semitone. This creates a leading note that pulls toward the tonic. Melodic minor: going up, raise both 6th and 7th; going down, use natural minor. The melodic form makes the ascent smoother to sing.

Relative Minor

Every major key shares its notes with a relative minor key — start 3 semitones lower (or a minor 3rd down) and you find it. C major's relative minor is A minor. G major's relative minor is E minor. They share the same key signature but have a different tonic. This is why a piece can be in A minor (no sharps or flats) and feel completely different from C major.

A Harmonic Minor (Example)

A natural minor: A B C D E F G A. Raise the 7th (G → G♯) for harmonic minor: A B C D E F G♯ A. Notice the gap of 3 semitones between F and G♯ — this is called an augmented 2nd, and it gives harmonic minor its distinctive tension. For melodic minor ascending: A B C D E F♯ G♯ A. Descending: A G F E D C B A (same as natural).

What a Key Signature Does

Instead of writing a sharp or flat on every note that needs one, the key signature puts them all at the start of each line. Every note on that line or space throughout the piece is automatically sharpened or flattened — unless a natural sign cancels it. A key signature is not a decoration. It defines the home base of the piece.

Finding the Key from the Signature

Sharps: the last sharp added is always the 7th degree of the major scale. So if you see F♯, C♯, G♯ — the last sharp is G♯, one semitone below A. The key is A major. Flats: the last flat added is always the 4th degree of the major scale. If you see B♭, E♭ — the second-to-last flat (B♭) is the key. The key is B♭ major. (Exception: one flat = F major — just memorise it.)

Major vs Minor

A key signature on its own does not tell you whether the piece is major or minor — only the relative minor shares the same signature. To tell them apart: look at the tonic note the piece starts and ends on, look for the raised 7th (harmonic minor), and listen to the emotional colour. Both clues together almost always confirm the key.

What a Mode Is

A mode is a scale built from the same seven notes as a major scale, but starting on a different degree. Take C major: C D E F G A B. Start on D using only those notes — you get D Dorian. Start on E — E Phrygian. Same notes, different starting point, completely different emotional colour.

Brightness Spectrum

The Seven Modes

How to Identify a Mode

First establish the key signature — how many sharps or flats. Then find the tonic. Compare the scale against major: is the 3rd raised or lowered? Is the 7th raised or lowered? The characteristic note (♭2, ♭5, ♯4, etc.) is usually enough to name it. For example, a scale with all the notes of C major but starting on G has a lowered 7th (F♮ instead of F♯ in G major) — that is G Mixolydian.

Modes in Music You Know

Dorian: "Scarborough Fair" (D Dorian), most Doric folk songs. Mixolydian: "Norwegian Wood" (Beatle's), "Sweet Home Chicago". Phrygian: Flamenco guitar, Carlos Santana solos. Lydian: John Williams film scores — that floating, otherworldly feel. Locrian: rare in tonal music; used in metal and film music for maximum dissonance.

Naming an Interval

Count the two notes and every note between them — including both end notes. C to G: C(1) D(2) E(3) F(4) G(5) = a 5th. C to E = a 3rd. C to C (octave higher) = an 8th (octave). The number tells you the size. The quality tells you the exact type.

Interval Quality

2nds, 3rds, 6ths, 7ths are either major or minor (major = one semitone wider than minor). Unisons, 4ths, 5ths, octaves are either perfect, augmented (one semitone wider than perfect), or diminished (one semitone narrower). An augmented 4th and a diminished 5th are both 6 semitones — they sound the same but are named differently based on how many note-names apart they are.

Interval Summary

Scale Degree Names

Each note in the major scale has a degree name. The key pairs to know are Dominant (5th) and Subdominant (4th) — they mirror each other around the Tonic. The Dominant pulls strongly upward toward the next Tonic; the Subdominant pulls downward toward the Tonic below. The same mirror relationship holds between Mediant (3rd) and Submediant (6th).

What a Triad Is

A triad is three notes stacked in 3rds — root, 3rd, 5th. The quality of the 3rd and 5th determines the chord type. Major: major 3rd + minor 3rd (= perfect 5th). Minor: minor 3rd + major 3rd (= perfect 5th). Diminished: minor 3rd + minor 3rd (= diminished 5th). Augmented: major 3rd + major 3rd (= augmented 5th).

Triads in a Major Scale

Build a triad on each degree of C major using only the notes of the scale: I (C major), II (D minor), III (E minor), IV (F major), V (G major), VI (A minor), VII (B diminished). The pattern — Major, Minor, Minor, Major, Major, Minor, Diminished — is the same for every major scale. Learn the pattern, not each key separately.

Inversions

A triad in root position has the root at the bottom. First inversion: 3rd at the bottom. Second inversion: 5th at the bottom. The same three notes, different bottom note. Roman numerals with a small letter show inversion: I^b = tonic chord first inversion, I^c = second inversion.

The Three Most Important Chords

In any major key, three chords do most of the work: I (tonic) — home, stability, rest. IV (subdominant) — moving away from home, gentle tension. V (dominant) — strong pull back to home. The chord V → I is called a perfect cadence, and it is the most common musical full stop in Western music.

Cadences

A cadence is a chord pair that ends a phrase, like punctuation. Perfect cadence (V → I): full stop — complete rest. Imperfect cadence (I → V or IV → V): comma — phrase ends but more is coming. Plagal cadence (IV → I): the "Amen" cadence — gentle, hymn-like final. Interrupted cadence (V → VI): a surprise — you expected I, you got VI instead.

Adding the VI

The most used four-chord progression in pop: I – V – VI – IV. In C major: C – G – Am – F. The VI (submediant) is the relative minor of the tonic — it gives the minor feeling without leaving the key. One of the most emotionally flexible chord sequences ever written.

Adding the 7th

A 7th chord is a triad with one more note stacked on top — a 3rd above the 5th. The extra note is the 7th of the chord. Four types appear in the training games: Major 7th (Maj7), Dominant 7th (Dom7), Minor 7th (m7), and Diminished 7th (dim7).

The Four Types on C

Dominant 7th — the Most Important

The Dom7 chord on the 5th degree of the scale (chord V7) creates the strongest pull back to the tonic. It contains both the leading note (a semitone below the tonic) and the tritone (B♭ and E in C7), which resolves in opposite directions. This tension-and-release is the engine of most tonal music.

What Sus Means

A suspended chord replaces the 3rd with either the 2nd or the 4th. Without a 3rd, the chord has no major or minor quality — it is neither bright nor dark. It feels unresolved, suspended. Sus2: root, 2nd, 5th. Sus4: root, 4th, 5th. Both usually resolve by moving the suspended note to the 3rd.

On the Keyboard

Why They Sound That Way

Removing the 3rd removes the chord's identity. The sus chord has no opinion about major or minor — it sits in the middle, waiting. Pop music uses sus4 constantly because it creates gentle tension that resolves satisfyingly when the 4th drops to the 3rd. Csus4 → C is one of the most naturally satisfying resolutions in Western harmony.

What Simple Time Means

In simple time, each beat divides naturally into two equal halves. The bottom number tells you which note gets one beat — 4 means crotchet. The top number tells you how many beats are in each bar.

Beat Division

Each beat in simple time divides into two: a crotchet → two quavers, or a quaver → two semiquavers. The symbol C (common time) equals 4/4. The symbol 𝄵 (cut time) equals 2/2 — minim gets the beat.

Beat Divides into Three

In compound time, each beat is a dotted note — it divides naturally into three equal parts. The most common is 6/8: two beats per bar, each beat is a dotted crotchet (three quavers). Top ÷ 3 = actual number of beats.

6/8 vs 3/4

Both use six quavers per bar. In 3/4 you feel three crotchet beats. In 6/8 you feel two dotted crotchet beats, each divided into three. Slower 6/8 sounds like six; fast 6/8 flows in two. This distinction comes up in Grade 5 theory papers.

Unequal Beat Groups

Irregular time signatures cannot be divided into equal groups of 2 or 3. They use asymmetric groupings instead. The most common are 5/4 (five crotchet beats) and 7/8 (seven quaver beats). The accents reveal where the groups are.

Silence Has a Value Too

Every note value has a matching rest. Rests are counted exactly like notes — hold the silence for the same number of beats.

Why Beaming Matters

Beaming (joining note tails together) signals the beat structure. A reader should see where each beat falls without counting from the bar line. Incorrect beaming is a common lost mark in Grade 5 theory.

Simple Time Rules

Beam within beats. In 4/4, you can beam up to four quavers together (two beats), but do not cross the midpoint of the bar — beats 1–2 and beats 3–4 should remain visually distinct. In 3/4, quavers can be beamed freely within the bar. In 2/4, beam within each crotchet beat.

Compound Time Rules

In 6/8, beam quavers in groups of three to match each dotted crotchet beat. Never beam four quavers together in 6/8 — it hides the compound beat division. This is the most common beaming error in exams.

The Brain Reads Patterns, Not Notes

A skilled rhythm reader does not process one note at a time. The brain recognises chunks — 1-beat cells that recur across all music. Once a cell is in muscle memory, it needs no conscious effort. This is the exact method the Rhythm training games use.

How to Train It

Practise each cell in isolation until you can clap it without thinking. Then combine: two cells = a bar of 2/4, three cells = a bar of 3/4. Before clapping a bar, name each beat's cell — "crotchet, two-quavers, dotted-quaver-semi." Naming switches your brain from reading to pattern-matching.

Dotted Rhythms

A dot after a note adds half its value. A dotted quaver lasts three-quarters of a beat, and the following semiquaver fills the remaining quarter. Together they equal exactly one beat — just unequally divided.

The result is a long-short pattern with a characteristic "snap" to it. You hear it in marches, Baroque music, and countless pop rhythms. On the page it looks like this:

Triplets

A triplet squeezes three equal notes into the space of two. A quaver triplet means three quavers in the space of one crotchet. The notation is always three notes under a bracket marked with the number 3.

The sound is even and rolling — unlike the dotted rhythm which is uneven. The key is that all three notes are exactly equal. Rushing the third note is the most common mistake.

Dotted vs. Triplet — the key difference

Both fit in one beat. But they feel completely different. The dotted rhythm leans forward — the long note carries weight and the short note snaps off it. The triplet is smooth and rolling — three equal voices sharing one beat evenly.

A common confusion: the dotted quaver + semiquaver has a ratio of 3:1 (three times as long, then one). The triplet has a ratio of 1:1:1 (equal). They sound nothing alike once you hear them clearly.

Tempo (Speed)

Dynamics (Volume)

pp (pianissimo) — very soft. p (piano) — soft. mp (mezzo-piano) — moderately soft. mf (mezzo-forte) — moderately loud. f (forte) — loud. ff (fortissimo) — very loud. crescendo (cresc.) — gradually louder. decrescendo / diminuendo — gradually softer.

Articulation & Character

Legato — smooth, connected. Staccato — short, detached. Tenuto — hold the full value, lean slightly. Sforzando (sfz) — sudden strong accent. Cantabile — in a singing style. Dolce — sweet. Espressivo — with expression. Vivace — lively. Con brio — with spirit.

Why Form Matters

Form is the architecture of a piece — how it is organised and how sections relate to each other. Understanding form tells you why a piece feels inevitable when it resolves, and surprising when it does not. It is also part of the Grade 5 theory paper.

Common Forms

Binary (AB): two sections, usually both repeated. Section A ends away from home (often on the dominant), section B returns home. Common in Baroque dance music. Ternary (ABA): A returns after a contrasting B. The return brings satisfaction. Most songs and slow movements use this. Rondo (ABACADA): a main theme (A) keeps returning between contrasting episodes. Theme and Variations: a theme is stated, then altered repeatedly in melody, rhythm, texture, or key while preserving its basic structure.

Sonata Form (Grade 5)

The most important form in Classical music. Three sections: Exposition — introduces Theme 1 (tonic) and Theme 2 (dominant or relative). Development — fragments and develops both themes through different keys. Recapitulation — both themes return in the tonic. The journey away and back is the emotional shape of a sonata movement.

What Ornaments Are

Ornaments are written as symbols but played as extra rapid notes. They come from Baroque and Classical practice, where composers expected expressive decoration. Grade 5 ABRSM theory requires you to identify and understand the main ornament symbols.

Key Distinctions

Trill vs mordent: a trill is long (many oscillations); a mordent is short (two extra notes only). Appoggiatura vs acciaccatura: the appoggiatura has harmonic weight — it creates a suspension that resolves on the main note. The acciaccatura is crushed in as quickly as possible and has no rhythmic value. Turn on vs between notes: a turn sign directly above a note starts immediately; a turn sign between two notes plays after the first note is held.

Baroque vs Classical

In Baroque music (Bach, Handel), trills often begin on the upper note. In Classical music (Mozart, Haydn) and later, trills often begin on the main note. In exams, follow the edition's guidance or note the context.

Tempo Change Instructions

Character & Mood

Navigation Marks

Da capo (D.C.) — go back to the very beginning. Dal segno (D.S.) — go back to the segno sign: . Coda () — jump to the tail section marked with the same coda sign. Fine — the end, used with D.C. al Fine (repeat from start, stop at Fine). These marks let a composer write a repeated section once and use directions to navigate, reducing page turns.

Modifying Words

These words do not give a tempo or character on their own — they modify another instruction. Recognising them is essential for reading complex musical directions.

Style & Texture Words

Common Compound Directions

più mosso — more movement, faster. meno mosso — less movement, slower. subito piano (sp) — suddenly soft. poco a poco cresc. — gradually getting louder, little by little. molto rit. — slow down a great deal. sempre legato — keep everything smooth throughout. In exams, break compound directions into their parts: molto = very, rit. = slow down → very slow down.