During this period he probably wrote his mass based on L'homme armé , as well as the chanson on the same song ; the latter composition may have been inspired by PERSON@1 the Good 's call for a new crusade against the MISC@1 , who had recently captured Constantinople .

During this period PERSON@2 probably wrote his mass based on the song L'homme armé , as well as the chanson based on the same song . Maybe he wrote this when PERSON@1 the Good called for a new crusade against the MISC@1 , who had recently captured Constantinople .
