| Answer | Crossword Clue |
|---|---|
| ROULADE | Series of rapid tones. |
| trills | rapid alternation of two nearby musical tones |
| trilled | rapid alternation of two nearby musical tones |
| trill | rapid alternation of two nearby musical tones |
| roulade | musical embellishment consisting of a rapid succession of tones sung to a single syllable |
| roulades | musical embellishment consisting of a rapid succession of tones sung to a single syllable |
| siren | apparatus producing musical tones especially in acoustical studies by the rapid interruption of a current of air, steam, or fluid by a perforated rotating disk |
