In later life , Dukas became well known as a music teacher , with many famous students including JoaquÃ n Rodrigo , Manuel Ponce , Maurice DuruflÃ , Xian Xinghai , Olivier Messiaen , Jehan Alain , Carlos ChÃ vez , and David Van Vactor . His many students included Jehan Alain , Elsa Barraine , Francis Chagrin , Carlos ChÃ vez , Maurice DuruflÃ , Georges Hugon , Jean Langlais , Olivier Messiaen , Manuel Ponce , JoaquÃ n Rodrigo , David Van Vactor and Xian Xinghai .