are Peter Maxwell Davies and Emmanuel Chabrier both composers ?
Peter Maxwell Davies Sir Peter Maxwell Davies (8 September 1934 – 14 March 2016) was an English composer and conductor. In 2004 he was made Master of the Queen's Music.
Guy Warrack Guy Warrack (6 February 1900, Edinburgh - 12 February 1986, Englefield Green) was Scottish composer and conductor. From 1925-1935 he taught on the faculty of the Royal College of Music. From 1935-1946 he was principal conductor of the BBC Scottish Symphony Orchestra and from 1948-1951 he was conductor for the Sadler's Wells Theatre Ballet. He is the father of English music critic John Warrack.