Ryom-Verzeichnis

The Ryom-Verzeichnis or Ryom Verzeichnis (both often abbreviated RV) is the standard catalogue of the music of Antonio Vivaldi created by Danish musicologist Peter Ryom. Verzeichnis is the German word for catalogue. First published in 1973 under the title Antonio Vivaldi: Table de Concordances des Œuvres (RV), the Ryom-Verzeichnis has existed in several forms over the course of its development. The catalogue is often used to identify Vivaldi's works by a simple number.

RV numbers below 741 were assigned systematically, with vocal works following 585 instrumental ones; as additional works are discovered or confirmed, they are assigned numbers above 740. Instrumental works were first sorted by category, instrumentation and key (beginning with C Major), and then assigned sequential numbers. For example, Vivaldi's celebrated Four Seasons, made up of four violin concertos (not sequentially numbered because they are in different keys), and his famous lute concerto are named and numbered as follows: Concerto No. 1 in E major, Op. 8, RV 269 – "La primavera" (Spring) Concerto No. 2 in G minor, Op. 8, RV 315 – "L'estate" (Summer) Concerto No. 3 in F major, Op. 8, RV 293 – "L'autunno" (Autumn) Concerto No. 4 in F minor, Op. 8, RV 297 – "L'inverno" (Winter) Lute Concerto in D major, RV 93