A scherzo is a light-hearted movement found from the early 17th century in various forms, but used by Beethoven as an alternative to the minuet in symphonies, sonatas and other instrumental forms. Chopin expanded the form very considerably. The diminutive scherzino or scherzetto is occasionally found, while scherzando occurs as a direction to performers. The scherzo, like the minuet, is generally used to frame a trio section of contrasted material.