Assertion: chord's tone | /r/HasProperty | written with accidental
Facets:
Source sentences:
text: According to composer Percy Goetschius, "Altered... chords contain one or more tones written with accidentals (♯, ♭, or ♮) and therefore foreign to the scale in which they appear, but nevertheless, from their connections and their effect, obviously belonging to the principal key of their phrase.