In this task your given a passage in Catalan. you must ask a question in Catalan, that is relevant to the passage. A question that is constructed should be precise and based on factual information from the passage. A constructed question should be: (a) unambiguous (b) be directly answerable from the passage (c) have a unique answer (d) have an answer that is a continuous span of text from the passage. Try to avoid formulating questions that (a) can be answered without referring to the passage, or (b) use exactly the same words or questions given in the passage. Try to make the question fluent in the language used. You have to create exactly one question.
Q: Entre el 1953 i el 1957, Richter va compondre una rica varietat de música comissionada per Edward Cole, per a ser enregistrada per MGM. En destaca Sonata for Piano (1954), enregistrada per Menahem Pressler;[5][7] Concerto for Piano and Violas, Cellos and Basses (1955); Lament (1956); i Aria and Toccata (1957). MGM també va enregistrar un àlbum de peces prèvies —com ara Transmutation (1949) i Two Chinese Songs (1949)— així com arranjaments de per a piano a quatre mans, i peces per a infants. Gràcies a aquesta col·laboració amb MGM va entrar en contacte amb molts artistes que es van interessar en la seva música.[23][24]
A: 
Què va compondre Richter entre el 1953 i el 1957?