Unit 7 · Lesson 3 of 6 — IB MYP: Personal and Cultural Expression · Communication
Expression Is a Musical Choice
Dynamics, articulation, tempo, instrumentation, and register should help communicate an idea—not get added at the end just to satisfy a checklist.
In this lesson
Learning Targets
Each section below is labeled with the target it teaches. The questions and your Noteflight task practice every target.
Target 1Use dynamics purposefully
Target 2Choose articulations for character
Target 3Connect tempo and register to musical intent
IB MYP connection
Command terms: APPLY · JUSTIFY
ApplyJustify
Learner Profile · ATL
Reflective · Thinker — Thinking: make and justify expressive choices that shape a complete musical statement.
Task
Use what you're learning to complete the Noteflight task below, then check your own work before moving on.
Inquiry: How do dynamics, articulation, and tempo change how the same notes communicate?
Reflect: What did “Expression Is a Musical Choice” teach you about your own composing choices?
Key words
Words you will use today
Expression
The way dynamics, articulation, tempo, register, and instrumentation work together to communicate a character or mood.
Articulation
How each note begins and ends: connected, separated, or emphasized.
Legato
Smooth and connected, with no gaps between notes. In a score, a curved line called a slur over a group of notes means play them legato.
Staccato
Short and detached, with a small gap after the note. In a score, a dot above or below the notehead.
Accent
An emphasized note that starts with extra force. In a score, a small > above or below the notehead (much shorter than a decrescendo hairpin, which stretches under several notes).
Tempo
The speed of the beat, measured in beats per minute. A tempo marking of ♩ = 96 means 96 quarter-note beats per minute.
Register
How high or low a passage sits (Unit 6). The same notes sound brighter and lighter up high, darker and heavier down low.
Articulation
Target 2
How each note begins and ends
In Unit 3 you used articulation to make two voices in a dialogue sound different. Here it becomes a tool for character. The examples below use exactly the same notes, the opening of “Twinkle,” so articulation is the only thing that changes. (On this site, articulations appear as labels under the notes: stacc. for staccato and > for an accent. Legato is the default.)
01
Legato: smooth, singing
Every note connects to the next. Legato suits calm, lyrical, or tender music, and it is how most singers phrase a melody.
“Twinkle,” mm. 1–2, legato (in 2/4, the meter of Mozart’s theme).02
Staccato: light, detached
Every note is cut short, leaving small silences between notes. Staccato sounds light, playful, or nervous, depending on tempo and dynamics.
The same notes, staccato.03
Accents: forceful, heavy
Accents on the first beat of each measure give the same notes a heavy, marching character. Accents can also spotlight one important note, such as an apex.
The same notes, with accents on each downbeat.04
Mixing articulations
Most real phrases mix articulations. Here the opening stays legato, an accent spotlights the G that the leap lands on (Unit 1), and the repeated G is staccato, lightening the line right after the emphasis. One articulation still leads; the others mark specific moments.
The same notes, mixed: legato, then one accent and one staccato note.
Dynamics with a purpose
Target 1
Every marking should have a reason
Lesson 2 taught you to read and write dynamics. The next step is using them purposefully. A purposeful dynamic does a job you can name: it shapes the contour (a crescendo to the apex), marks the form (a new level for a new section), sets a character (pp for mystery, ff for triumph), or creates a surprise. A decorative dynamic is added at the end just to have one, and it often works against the music.
01
Decorative
The levels jump on almost every beat, with no connection to the melody. The ff lands on the closed ending, where the melody is settling, so the dynamics and the notes contradict each other.
“Twinkle,” section A, with dynamics that have no reason.02
Purposeful
A moderate start, a crescendo to mf as the melody reaches its highest note (A), then a decrescendo to p as it steps down to the closed ending. Each marking follows the contour.
“Twinkle,” section A, with dynamics that follow the contour.
Tempo and register
Target 3
Speed and height change the message
Tempo and register shape character before a single dynamic is written. Faster tempos tend to sound energetic, excited, or urgent; slower tempos sound calm, heavy, or solemn. High registers tend to sound bright, light, or delicate; low registers sound dark, heavy, or menacing. Each pair of examples below uses the same notes.
01
Slow tempo: ♩ = 60
At a slow tempo, the opening of “Twinkle” sounds calm and unhurried, close to a lullaby.
“Twinkle,” mm. 1–2, ♩ = 60.02
Fast tempo: ♩ = 160
The same notes at nearly three times the speed sound busy and hurried. Grieg uses this effect in “Mountain King,” speeding the theme up as the chase grows wilder.
“Twinkle,” mm. 1–2, ♩ = 160.03
Low register: menacing
Grieg starts “In the Hall of the Mountain King” low, in the cellos, basses, and bassoons, to suggest trolls creeping in the dark.
Grieg, theme mm. 1–2 (transposed to E minor), in a low register.04
High register: bright, almost comic
The same notes two octaves higher lose their menace. They sound small and light, more like a music box than a troll’s cave.
The same notes, two octaves higher.
Worked comparison
Target 1Target 2Target 3
Same notes, two different messages
Here is “First Light,” the Unit 1 model, arranged as two expressive versions. The pitches (apart from the octave) and the rhythm are identical. Everything else was chosen to communicate a different character.
01
Version 1: “Lullaby”
Slow (♩ = 66), low register, legato, soft, fading to pp.
“First Light,” one octave lower (bass clef), ♩ = 66.02
Version 2: “Fanfare”
Fast (♩ = 132), high register, accents and staccato, loud, with ff at the apex.
“First Light,” one octave higher, ♩ = 132.
Element
“Lullaby”
“Fanfare”
Tempo
♩ = 66: unhurried
♩ = 132: energetic
Register
An octave lower: dark, warm
An octave higher: bright, ringing
Dynamics
p, decrescendo to pp for the ending
f, with ff at the apex
Articulation
Legato throughout
Accents on strong beats, staccato on some weak beats
Character
Calm, drifting toward sleep
Bold, ceremonial
Model description: Both versions use the same pitches and rhythm, but they communicate opposite characters. The “Lullaby” sets the melody an octave lower at a slow tempo, keeps it legato, and fades from p to pp so the closed ending sounds like drifting off. The “Fanfare” moves it an octave higher, doubles the tempo, marks the strong beats with accents and shortens several weak-beat notes with staccato, and peaks at ff on the apex. In each version, all four elements point toward the same character, which is why each one sounds convincing.
Notice what the description does: it compares the versions element by element and connects each choice to the character it creates. When the elements agree with each other, expression sounds intentional.
Check your understanding
Try it before you compose
Pick an answer for each question. You will see right away whether you are correct and why.
0 of 6 correct
1Listen only. Which articulation do you hear?
Target 2
2Listen, then choose which excerpt you heard.
Target 2
1
2
3You want a melody to sound light and playful, like someone tiptoeing. Which main articulation fits best?
Target 2
4Play both versions of “Twinkle” section A. Which version uses dynamics purposefully?
Target 1
1
2
5A student wants the B section of their piece to sound darker and heavier than A. Which change to tempo and register fits best?
Target 3
6Why does Version 2 of “First Light” (“Fanfare”) sound bold?
Target 1Target 2Target 3
Take it to Noteflight
Two expressive versions of the same notes
Choose a composition you wrote earlier in this course. Keep its notes and rhythm, and change only expression: dynamics, articulation, and tempo (and register, if it helps). Then compare what each version communicates.
Your Noteflight task
Take an earlier composition and create two expressive versions using different dynamics, articulation, and tempo. Compare how the same notes communicate differently.
Starting level plus changes you can justify: contour, form, or character.
In real music“Twinkle,” purposeful dynamics
ArticulationTarget 2
A main articulation
Legato, staccato, or accents, chosen for the character, plus marks for specific moments.
In real music“Twinkle,” mixed
Tempo & registerTarget 3
A different tempo
Set a clearly different tempo for each version; change the register if it helps.
In real musicGrieg, “Mountain King”
2While you build
·>
Target 2
Give each version one main articulation, with exceptions only where the music needs them (for example, an accent on the apex).
♩=
Target 3
Set a different tempo marking for each version. If you move a version up or down an octave, check that every part stays in a sensible register for its instrument.
✎
Target 1
Play both. Write 2–3 sentences comparing them element by element, modeled on the “First Light” description, and name the character each version communicates.
3Noteflight tip
To start Version 2, select all the measures of Version 1 and copy (⌘ C on a Mac, Ctrl C on Windows or a Chromebook). Click the first empty measure after it and paste (⌘ V / Ctrl V), then change only the expression.
4Check your own work
0 of 6 checked
Finish the Noteflight work above, then mark this lesson done when you finish.