A melody on its own is like a single line drawing. Add notes sounding together and you add colour and depth – that is harmony. The way all the lines in a piece are layered and woven together is called texture. In CSEC, harmony and texture are key evidence for telling the style periods apart: dense Baroque polyphony, clear Classical textures, lush Romantic chords and the dissonance of 20th-century music.
Chords and triads
A chord is three or more notes played at the same time. The basic chord in Western and most popular music is the triad: a root note plus the notes a third and a fifth above it. Built on C, that gives C–E–G.
- A major triad (C–E–G) sounds bright and stable.
- A minor triad (C–E♭–G) sounds darker.
- A diminished triad (C–E♭–G♭) sounds tense.
- A seventh chord adds a fourth note; the dominant seventh (G–B–D–F in C major) pulls strongly back to the tonic chord.
Chords built on each note of a scale are numbered with Roman numerals. In C major, chord I is C major, IV is F major and V is G major. These three “primary chords” are enough to accompany thousands of folk songs, calypsos, hymns and blues.
A broken chord or arpeggio plays the notes of a chord one after another instead of together – the Form 2 curriculum asks you to play and recognise arpeggios.
Consonance and dissonance
Consonant chords and intervals (such as the octave, perfect fifth and major third) sound stable and restful. Dissonant ones (such as the minor second or the tritone) sound tense, as if they want to move somewhere. Most music creates interest by moving from dissonance to consonance – tension and release. Twentieth-century composers sometimes left dissonances unresolved on purpose.
Try it: chord and interval player
TRY ITChord and interval player
Hear a chord one note at a time (arpeggio) and then all together (block chord). Compare major with minor, and consonant intervals with dissonant ones.
Press Play to listen. Nothing plays until you press the button. Start with your volume low.
Texture: how the layers fit together
| Texture | What you hear | Example |
| Monophonic | A single melody line with no accompaniment | one person singing alone; plainchant |
| Unison / octaves | Several performers on the same melody at the same pitch (or in octaves) | a class singing a national song in unison |
| Homophonic | One main melody with chordal accompaniment, or all parts moving together in the same rhythm | a singer with guitar; a hymn sung in four parts |
| Polyphonic (contrapuntal) | Two or more independent melodies at the same time | a round; a Bach fugue; Pachelbel’s Canon |
| Heterophonic | Several performers playing slightly different versions of the same tune together | many folk traditions, including some Indian and Caribbean styles |
We also describe texture as thin (few layers) or thick (many layers). A canon or round is a simple kind of polyphony: every part sings the same tune but starts at a different time.
Try it: texture explorer
The folk round “Frère Jacques” is played four ways. Listen for the moment each new line enters in the polyphonic version.
TRY ITTexture explorer: one voice to three
The folk song “Frère Jacques” is played four ways. Count how many independent lines you can hear.
Press Play to listen. Nothing plays until you press the button. Start with your volume low.
Listen: harmony and polyphony in Pachelbel’s Canon
Johann Pachelbel’s Canon in D (late 1600s) repeats the same eight-note bass line and chord progression over and over (a ground bass), while three violins play the same melody in canon, each starting two bars after the last. This performance by Voices of Music uses period instruments, so you can also hear the Baroque basso continuo.
Activity: texture spotting
Listen to the first minute of three different pieces – for example a solo folk song, a pop song and a choir. For each, write the texture (monophonic, homophonic or polyphonic) and give one piece of evidence.
Quick check
1. Which notes make up a C major triad?
Show answer
C, E and G (root, third and fifth).
2. What is an arpeggio?
Show answer
The notes of a chord played one after another rather than together.
3. What is the difference between homophonic and polyphonic texture?
Show answer
Homophonic is one main melody with accompaniment (or parts moving together); polyphonic has two or more independent melodies at once.
4. Is a round such as “Frère Jacques” monophonic or polyphonic when sung in parts?
Show answer
Polyphonic – the same tune overlaps itself at different times.
5. Which chords are the primary chords in C major?
Show answer
I (C major), IV (F major) and V (G major).
Previous: Melody and Pitch: The Staff, Clefs, Scales, Solfa, Sargam and Accidentals
Next: Timbre and Instruments: Orchestral Families, Steelpan, Tassa, Tabla, Harmonium and the Voice
Syllabus link: T&T Lower Secondary (NCSE) Visual and Performing Arts curriculum – Music, Forms 1–3: Harmony 3.2.29–3.2.30 (homophonic and polyphonic music) and 3.3.27; Texture 3.1.37–3.1.38 (unison, monophonic), 3.2.33 and 3.3.32. CSEC® Music syllabus (CXC 31/G/SYLL 17), Section 1: Listening and Appraising – Music History and Theory: Appendix I – harmony and texture; Content 2(a)(ii) and (iv) – clear triads, seventh chords and dense polyphony in the Baroque; 2(c)(ii) – less dense Classical textures; 2(d)(ii) – thicker Romantic harmony; 2(e)(iii) – dissonance, polytonality and atonality.
Attributions to media used in this post:
SixBasicChordsInCMajor.PNG – Opus33 – Public domain (via Wikimedia Commons)
© 2026 Vedesh Kungebeharry. All rights reserved.