A Dictionary of Music and Musicians/Gruppo

GRUPPO, GRUPETTO, the Italian names for our Turn, which see. Sebastien de Brossard (Dictionnaire de Musique) says that the turn is called Groppo (or Gruppo) ascendente and Groppo descendente, according as the last note of the group rises or falls. The two examples given under Trill represent the two kinds. [See also vol. iii. p. 598b, note 4.]

[ M. ]