Joseph Ascher (3 June 1829 – 20 June 1869) was a Dutch-Jewish composer and pianist who was active in London and Paris for most of his life.
Ascher was born in Groningen, the son of the chazzan of the city, who went on to become a cantor in London. He started his musical studies in London and continued them at the Leipzig Conservatory with
Ignaz Moscheles as his teacher, but did not graduate.
His pianistic gifts were recognized by the Empress Eugénie of France, who asked him to become her court pianist in 1849. In 1865, Ascher moved back to London, while in Paris he was succeeded as court pianist by
Émile Waldteufel. He died in London from the result of what some 19th-century sources call "a dissolute life". Brown (1886) regarded him as a "composer who, had he been more careful in his worldly relations, might have proved one of the greatest among recent musicians."
Ascher composed about 170 works for piano, piano four- and eight-hands, as well as ballads and display pieces for solo singers with piano accompaniment. Brown (1886) wrote: "his music is more than commonplace, and many of his single pieces evince genius of a decidedly original turn. The numerous pieces which he has produced for the Pf. [NB.: the piano] are in general brilliant and effective in character; while several of them show tokens of real genius inspiration."
