 Thereafter , despite changing musical trends , Peerson 's music showed significant roots in Renaissance polyphony . However , he was adept in the use of then @-@ modern compositional procedures ; this is evident in his often daring use of chromaticism , especially seen in word painting . Some of his finest music is contained in his set of 15 Latin motets , which was probably composed around the turn of the century . Existing only in a single copy , it originally consisted of five part @-@ books but the Cantus book is lost . Richard <unk> , professor of historical musicology at the University of Leeds , spent 12 years reconstructing the missing part . The complete Latin motets have been published by <unk> Edition , and a recording of their performance by Ex Cathedra entitled Peerson : Latin Motets was produced by Hyperion Records in 2005 . 
