Symphony No. 3 was written by a musician who was proficient on what instrument?
Symphony No. 3 (Nielsen): The Danish composer Carl Nielsen wrote his Symphony No. 3 "Sinfonia Espansiva", Op. Carl Nielsen: Carl August Nielsen (] ; 9 June 18653 October 1931) was a Danish musician, conductor and violinist, widely recognized as his country's most prominent composer.
violinist