Edward Elgar

Sir Edward William Elgar, 1st Baronet OM, GCVO (2 June 1857 – 23 February 1934) was an English composer, many of whose works have entered the British and international classical concert repertoire. 
His works include the musical cryptogram the Enigma Variations - there are a number of stated solutions, eg this.
He also created the Dorabella Cipher.
More information on the Wikipedia page . 
A website devoted to him here.
Category:Biographies
Category:20th century