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AP Music Theory · Unit 6: Harmony & Voice Leading III

6.1 Non-Chord Tones I

What they are

Non-chord tones (NCTs) are notes that don't belong to the current chord, adding melodic interest. They're defined by how they're approached and left.

Passing & neighbor tones

A passing tone fills the gap between two chord tones by step (up or down). A neighbor tone steps away from a chord tone and returns to it (upper or lower neighbor).

Approach and resolution

Both passing and neighbor tones are approached and left by step. Identifying NCTs means analyzing the surrounding chord and how the note connects to it.

Key terms

Non-chord tone (NCT)
a note foreign to the current chord
Passing tone
steps between two chord tones
Neighbor tone
steps away and returns to a chord tone
Approach/resolution
both are approached and left by step
Purpose
add melodic interest and smoothness

Try an AP-style question

A passing tone…

  1. arrives before its chord
  2. connects two chord tones by step
  3. leaps away and returns
  4. is held over from a prior chord
Show the answer

B. Stepwise fill.

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