Brahms's violin concerto was written by Brahms. The clue is in
its name: the 'Brahms' violin concerto.
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Brahms violin concerto was written in D Major. Johannes Brahms
composed this piece in 1878 and was dedicated to this friend Joseph
Joachim who played the violin.
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Tchaikovsky only wrote one violin concerto: Violin Concerto in D
Major.