Simplify the following text for a Grade 5 native English-speaking person.
Original: Whether or not he wrote the first mass based on L'homme armÃ , his was by far the most influential ; Obrecht 's mass , for example , closely parallels the setting by Busnois and even the mass by Dufay quotes from it directly .
Simplified: He may have been the very first composer to write a mass based on L'homme armÃ . This mass was a big influence on many composers .