Groupettos are typically notated as a small group of notes, usually three or four, with a curved line above them. The main note is usually the first and last note of the group, and the auxiliary note is usually the middle note. The auxiliary note is often played higher than the main note, but it can also be played lower.
Groupettos can be performed in a variety of ways, depending on the tempo and style of the music. In Baroque and Classical music, they are often played very quickly and lightly. In some cases, the auxiliary note may be barely perceptible, while in other cases it may be more pronounced.
Groupettos can add a sense of ornamentation and embellishment to a piece of music. They can also be used to create a sense of movement and excitement.