| Answer | Crossword Clue |
|---|---|
| sesquitertia | a perfect fourth; a rhythm of three notes against four |
| sesquitertias | SESQUITERTIA, a perfect fourth; a rhythm of three notes against four |
| tetrachord | A scale of four notes, the interval between the first and last being a perfect fourth |
| tetrachords | A scale of four notes, the interval between the first and last being a perfect fourth |
| fourths | An interval spanning four consecutive notes in a diatonic scale, in particular (also perfect fourth) an interval of two tones and a semitone (e.g., C to F) |
| sesquialtera | a perfect fifth; three notes against two; an organ stop giving the root, the twelfth and the tierce |
| sesquialteras | SESQUIALTERA, a perfect fifth; three notes against two; an organ stop giving the root, the twelfth and the tierce |
