From the music we listened to, which of the works is in ritornello form? All of these Handel - "Ev'ry Valley" Vivaldi - "Spring", mvt. 1 Bach - "Brandenburg no. 5"mvt. 1

The work that is in ritornello form from the options provided is Vivaldi's "Spring," mvt. 1. Ritornello form is a musical structure commonly used in the Baroque period, characterized by a recurring theme (the ritornello) played by the full ensemble, which alternates with contrasting episodes played by soloists. Vivaldi frequently employed this form in his concertos, including "Spring" from "The Four Seasons."