March 31 was the birthday (in 1872) of the Russian impresario Sergei Diaghilev (he died in 1929). His contribution to the arts – visual, ballet and music – in the 20th century was enormous. To celebrate the impact he had on music, here are some of the great scores that he commissioned (and here's the Rag-Mazurka from Poulenc's Les biches to listen to on Spotify – this will not work in some territories: apologies if this the case):

Nikolai Tcherepnin Narcisse et Echo The Hague Residentie Orchestra / Gennady Rozhdestvensky (Chandos) Buy from Amazon 

Claude Debussy Jeux Hallé Orchestra / Sir Mark Elder (Hallé) Buy from Amazon

Maurice Ravel Daphnis et Chloé MDR Rundfunkchor, Leipzig; Lyon National Orchestra / Jun Märkl (Naxos) Buy from Amazon

Erik Satie Parade New London Orchestra / Ronald Corp (Hyperion) Buy from Amazon

Manuel de Falla El Sombrero de Tres Picos Boston Symphony Orchestra / Seiji Ozawa (DG) Buy from Amazon

Richard Strauss Josephslegende Budapest Festival Orchestra / Iván Fischer (Channel Classics) Buy from Amazon

Sergei Prokofiev Ala and Lolly (reworked as the Scythian Suite and Chout) LSO / Claudio Abbado (DG) Buy from Amazon

Sergei Prokofiev Le pas d’acier and The Prodigal Son WDR SO Köln / Michail Jurowski (CPO) Buy from Amazon

Ottorino Respighi La Boutique Fantasque Montreal SO / Charles Dutoit (Decca) Buy from Amazon

Francis Poulenc Les biches Philharmonia / Georges Prêtre (EMI) Buy from Amazon