MUSI20143 Chap.4 Pitch, Intervals and Melody
Pitch, Intervals and Melody
Pitch is organised through culturally situated tuning systems rather than one universal reference. The course contrasts Western fixed concert pitch with ensemble-specific tuning and flexible choral transposition. An interval measures the distance between two pitches; successive intervals create melodic contour. Conjunct motion moves mainly by seconds, while disjunct motion uses larger leaps.
The major scale spacing used in the exercises follows tone, tone, semitone, tone, tone, tone, semitone, while modes show that other pitch organisations carry their own musical meanings.
What this chapter covers
- 01
Pitch and tuning context
- 02
Interval distance
- 03
Semitone counting
- 04
Melodic contour
- 05
Conjunct motion
- 06
Disjunct motion
- 07
Scales and modes
Worked example · free
Describe a mixed melodic contour
- 1C-D-E rises by steps, so the opening is conjunct.
- 1E-A is the larger leap, creating disjunct motion.
- 1A-G-F descends by steps; the whole contour rises, leaps and then falls.
Key terms
- Pitch
- Pitch is the perceived highness or lowness of a sound within a musical system.
- Interval
- An interval is the distance between two pitches.
- Contour
- Contour is the overall pattern of rises, falls and repeated pitches in a melody.
- Conjunct Motion
- Conjunct motion proceeds mainly through stepwise intervals.
- Disjunct Motion
- Disjunct motion uses larger melodic leaps.
- Mode
- A mode is an organised pitch collection with characteristic interval relationships and meanings.
Pitch, Intervals and Melody FAQ
How do intervals relate to melody?
An interval describes one distance between two pitches. Melody links many such distances through time, producing direction and contour. Tracking adjacent intervals lets you explain where a line moves by steps, where it leaps and how it reaches points of rest.
What is the difference between conjunct and disjunct motion?
Conjunct motion uses mostly seconds and sounds stepwise. Disjunct motion uses larger leaps. Many melodies mix both, so classify the specific passage or describe the line as mixed when one larger leap interrupts otherwise stepwise movement.
Does transposition change a melody?
Transposition moves the complete pitch pattern higher or lower. When every pitch shifts by the same interval, the melodic contour and internal interval relationships can remain recognisable even though the absolute starting pitch changes.
When should I use semitone counting in an interval answer?
Use it when the task supplies Western note names, a chromatic keyboard or another framework in which semitone distance is the requested evidence. State the direction and count each smallest movement between neighbouring pitches. Then compare the result with a plain contour description so a reversed note order is easier to catch.
When a source names another tuning practice, do not assume that the same grid is universal; describe the relationships supported within that stated context.
Assessment move
Write short original note strings and analyse every adjacent movement before describing the overall contour. Use the course semitone table for exact Western interval qualities, but state the tuning framework rather than applying it automatically to every tradition. Sing each example after counting it so that written direction and heard direction agree.
Rehearse the major-scale spacing pattern, then compare it with a modal example to keep pitch organisation separate from any claim of universality. Start interval work with direction. Mark each pair as rising, falling or repeated before calculating size. This simple step prevents a correct distance from being attached to the wrong movement.
After naming the interval, place it back into the phrase and describe whether it continues a pattern or creates a contrasting leap. Use two counting methods consciously. Diatonic letter count gives the generic number and includes both endpoints. Semitone count distinguishes qualities inside the Western chromatic framework.
Write the method beside the result during practice so that a third counted by letters is not confused with three semitones. Sketch contour on blank paper without a staff. Space notes horizontally by time and vertically by relative pitch, then circle the largest leap and underline repeated pitches. Compare that sketch with the note sequence.
This reduces dependence on notation while preserving the relationships that define the melody. Practise transposition by moving every note of a short line up the same distance. Check that adjacent intervals and the contour remain unchanged. Then alter only one note and explain which relationship changes. The contrast shows why transposition can preserve melodic identity while local interval changes reshape it.
Keep cultural context visible in revision notes. Label the semitone table as the framework used for the course’s Western interval exercises, not as a universal measurement imposed on every tradition. When another tuning system is named, describe its organisation from the evidence supplied and avoid translating it prematurely into fixed concert pitch. Use an interval audit at the end of each set.
Read every answer aloud as direction, generic size and, where required, quality. Then describe the phrase without interval names: stepwise rise, large leap, repeated pitch or descent. Agreement between the technical and plain-language descriptions is a useful negative control. If they conflict, return to the note order and recount rather than trusting whichever label looks more familiar.