Name The Year: Sir Frank Dyson, proved Einstein right about light bent by gravity, born.?

Questions

Who wrote the 1829 opera William Tell?

A feature of Franz Schubert's life was the Schubertiad. What was it?

For what two solo instruments did Brahms write his DoubleConcerto in A minor Op. 102?

Which pianist served as Prime Minister of Poland?

Which monarch performed, composed and published flute concertosand sonatas?