Who is this Finnish composer and violinist of the late Romantic and early-modern periods that the Scottish music critic and composer Cecil Gray published books on?
Jean Sibelius Jean Sibelius ( ;    ), born Johan Julius Christian Sibelius (8 December 186520 September 1957), was a Finnish composer and violinist of the late Romantic and early-modern periods. He is widely recognized as his country's greatest composer and, through his music, is often credited with having helped Finland to develop a national identity during its struggle for independence from Russia.
Arthur Duff Arthur Knox Duff (13 March 1899 – 23 September 1956) was an Irish composer and conductor, best known for his short orchestral pieces such as the Handel-inspired "Echoes of Georgian Dublin". His career also encompassed senior positions in the Irish Army School of Music and in the music department of Radio Éireann.