ma ar , ▁and ▁finally ▁Amsterdam ▁( as ▁late ▁as ▁ 1 4 6 8 ) ▁also ▁set ▁up ▁dedicated ▁" col lege " ▁cho irs . ▁ ▁The ▁Lit ur gy ▁of ▁the ▁H ours ▁in ▁major ▁Dutch ▁churches ▁in ▁the ▁ 1 5 th ▁Century ▁was ▁as ▁follows : ▁ ▁Mat ins ▁ ▁including ▁La ud s ▁( one ▁combined ▁service ) ▁ ▁Prime , ▁early ▁morning ▁ ▁Ter ce , ▁mid - mor ning ▁ ▁Se xt , ▁m idd ay ▁ ▁None , ▁mid - af ternoon ▁ ▁V es pers , ▁evening ▁service ▁ ▁Com pl ine , ▁night ▁service ▁ ▁A part ▁from ▁the ▁Le iden ▁cho ir books ▁almost ▁no ▁trace ▁surv ives ▁of ▁the ▁Seven ▁Lit urg ical ▁H ours ▁re per toire . ▁The ▁Le iden ▁books ▁themselves ▁surv ived ▁the ▁icon oc las m ▁of ▁ 1 5 6 6 ▁when ▁a ▁mob ▁burst ▁into ▁the ▁Piet ers ker k ▁and ▁r ans ack ed ▁it . ▁Appar ently , ▁they ▁were ▁secure ly ▁locked ▁away ▁and ▁surv ived . ▁ ▁A part ▁from ▁works ▁by ▁ren owned ▁master s ▁such ▁as ▁C lem ens ▁non ▁Papa , ▁C rec qu illon , ▁Jos quin ▁des ▁Pre z , ▁Johannes ▁L up i , ▁and ▁Jean ▁Rich af ort , ▁the ▁books ▁also ▁include ▁an ony ma ▁and ▁compos itions ▁by ▁less ▁well - known ▁F lem ish ▁and ▁local ▁compos ers , ▁such ▁as ▁Claud in ▁Pat ou let , ▁Jo achim