Antonio Vivaldi wrote the Concerto for Strings in D major, RV 121, as a concerto ripieno, a Baroque form built around the full string group rather than a single featured soloist. The RV number comes from the Ryom-Verzeichnis catalogue that organises Vivaldi's works. Known for The Four Seasons, Vivaldi shaped hundreds of concertos in early 18th-century Italy, and this short, energetic writing became a go-to example of bright Baroque style. Online, editors reuse the passage as instantly recognisable classical shorthand for elegance, learning and mock grandeur.