a rule that prohibited singing a pitch needing the solmization syllable `mi ` against one needing the syllable `fa. ` Thus, the pitches E and F could not be sounded together; neither could E and B flat. See hexachord . Found on https://www.arlima.net/the-orb/encyclop/culture/music/orbgloss.htm
a rule that prohibited singing a pitch needing the solmization syllable `mi ` against one needing the syllable `fa. ` Thus, the pitches E and F could not be sounded together; neither could E and B flat. See hexachord .