Marius Casadesus
Marius Casadesus was a French
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

The violin is a string instrument, usually with four strings tuned in perfect fifths. It is the smallest, highest-pitched member of the violin family of string instruments, which includes the viola and cello....

ist and composer
A composer is a person who creates music, either by musical notation or oral tradition, for interpretation and performance, or through direct manipulation of sonic material through electronic media...

. He was the brother of Henri Casadesus
Henri Casadesus
Henri Casadesus was a violist and music publisher. He was the brother of Marius Casadesus, uncle of the famous pianist Robert Casadesus, and granduncle of Jean Casadesus....

, uncle of the famed pianist Robert Casadesus
Robert Casadesus
Robert Casadesus was a renowned 20th-century French pianist and composer. He was the most prominent member of a famous musical family, being the nephew of Henri Casadesus and Marius Casadesus, husband of Gaby Casadesus, and father of Jean Casadesus.-Biography:Robert Casadesus was born in Paris...

, and grand-uncle to Jean Casadesus
Jean Casadesus
Jean Casadesus was a French classical pianist. He was the son of the renowned pianists Robert and Gaby Casadesus, and grandnephew of Henri Casadesus and Marius Casadesus.Jean Casadesus was born in Paris...


Marius Casadesus achieved perhaps his greatest fame (or notoriety) through his association with the so-called "Adélaïde Concerto
Adelaide Concerto
The Adélaïde Concerto is the nickname of a Violin Concerto in D Major attributed to Wolfgang Amadeus Mozart and given the catalog number K. Anh. 294a in the third edition of the standard Köchel catalogue of Mozart's works. Unknown until the 20th century, this concerto was later discovered to be a...

" attributed to Mozart
Wolfgang Amadeus Mozart
Wolfgang Amadeus Mozart , baptismal name Johannes Chrysostomus Wolfgangus Theophilus Mozart , was a prolific and influential composer of the Classical era. He composed over 600 works, many acknowledged as pinnacles of symphonic, concertante, chamber, piano, operatic, and choral music...

. This concerto was published in 1933 in a piano transcription under Mozart's name, with Casadesus as "editor." Many music scholars believed in its authenticity, and Yehudi Menuhin
Yehudi Menuhin
Yehudi Menuhin, Baron Menuhin, OM, KBE was a Russian Jewish American violinist and conductor who spent most of his performing career in the United Kingdom. He was born to Russian Jewish parents in the United States, but became a citizen of Switzerland in 1970, and of the United Kingdom in 1985...

 made a recording of the concerto
A concerto is a musical work usually composed in three parts or movements, in which one solo instrument is accompanied by an orchestra.The etymology is uncertain, but the word seems to have originated from the conjunction of the two Latin words...

. It was even given a place in the Köchel-Verzeichnis
The Köchel-Verzeichnis is a complete, chronological catalogue of compositions by Wolfgang Amadeus Mozart which was originally created by Ludwig von Köchel. It is abbreviated K or KV. For example, Mozart's Requiem in D minor was, according to Köchel's counting, the 626th piece Mozart composed....

 (the standard catalog of Mozart's works), albeit as "K. Anh. 294a." ("Anh." denotes "Anhang" or "appendix" to the catalog.) However, Mozart expert Alfred Einstein's doubts about this piece were confirmed when Casadesus later admitted his authorship in court in 1977 during a copyright dispute.

Casadesus' brother Henri
Henri Casadesus
Henri Casadesus was a violist and music publisher. He was the brother of Marius Casadesus, uncle of the famous pianist Robert Casadesus, and granduncle of Jean Casadesus....

 was also a noted author of musical hoaxes, such as "Handel
HANDEL was the code-name for the UK's National Attack Warning System in the Cold War. It consisted of a small console consisting of two microphones, lights and gauges. The reason behind this was to provide a back-up if anything failed....

's Viola concerto in b-minor" and "J.C. Bach's
Johann Christian Bach
Johann Christian Bach was a composer of the Classical era, the eleventh and youngest son of Johann Sebastian Bach. He is sometimes referred to as 'the London Bach' or 'the English Bach', due to his time spent living in the British capital...

 Viola Concerto in c-minor."

Casadesus is also known for having given the first recital of Ravel's
Maurice Ravel
Joseph-Maurice Ravel was a French composer known especially for his melodies, orchestral and instrumental textures and effects...

 "Tzigane" in the presence of the composer in Barcelona
Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of...

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