Between Pelléas et Mélisande and Riders to the Sea, which one has more acts?
Riders to the Sea (opera) Riders to the Sea is a short one-act opera by Ralph Vaughan Williams, based on the play of the same name by John Millington Synge. The composer completed the score in 1927, but it was not premiered until 1 December 1937, at the Royal College of Music, London. The opera remained largely the province of students and amateurs until it entered the repertoire of Sadler's Wells in 1953.
Senza sangue Senza sangue (Without blood) an opera in one act by Péter Eötvös with a libretto by Mari Mezei. It is based on the second part of the novel of the same name by Alessandro Baricco and is intended to be performed jointly with Béla Bartók's one-act "Bluebeard's Castle". The concert première was given by the Cologne Philharmonic Orchestra on 1 May 2015. It was premièred in full on 15 May 2016 at the Festival d'Avignon. It is his tenth opera. Anne Sofie von Otter, who gave the New York première with the New York Philharmonic, said: "“The piece is not at all easy for the two singers... [It’s] hard to find the pitch; you have to work it into the voice, unless of course you happen to have perfect pitch, which I don’t."