non-harmonic tone

(music) a note that is played or sung between two chords that is not a part of either chord

Japanese Meaning

和音の一部ではない補助的または装飾的な音（和音間に演奏または歌唱される音） / 和音同士の間で鳴らされ、どちらの和音にも含まれない挿入音

The melody briefly included a non-harmonic tone that created dissonance between the two chords.

その旋律には一時的に和音に属さない音が含まれており、二つの和音の間に不協和音を生み出した。

Sense（1）

(music) a note that is played or sung between two chords that is not a part of either chord

non-harmonic tones

（ plural ）