Turn

The turn (also called gruppetto in Italian) is a four-note ornament that ‘turns’ around a principal note. The pattern is: upper auxiliary — principal — lower auxiliary — principal. The notation is a horizontal S-shape (∽) above the note.

The turn provides a graceful melodic decoration. It was particularly common in 18th-century music, where it appears constantly in keyboard, vocal, and instrumental writing. Mozart was a master of turn-based ornamentation; his slow movements feature turns in nearly every phrase.

Variations exist. The ‘inverted turn’ reverses the direction: lower auxiliary — principal — upper auxiliary — principal. The turn can be placed before, on, or after the beat depending on stylistic conventions of the period and composer.

English, descriptive — the ornament ‘turns’ around the principal note. Italian gruppetto (‘little group’) is the equivalent term.

Execute the four notes evenly. Light, graceful, decorative. The turn should ornament the principal note without overshadowing it.