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.
Stuart Challender Stuart David Challender, AO (19 February 194713 December 1991) was an Australian conductor, known particularly for his work with The Australian Opera, Elizabethan Sydney Orchestra and the Sydney Symphony Orchestra.