Orlande de Lassus is regarded as one of the great masters of the art of polyphony working in the autumn of the Renaissance. He composed in almost every genre of the time, both sacred and secular, and can with justification be described as the supremely versatile cosmopolitan, the supremely prolific, famous, and influential composer of his day. This book is the first study in English to offer a critical survey of his immense output. Jerome Roche (1942-94) took BA, MusB and doctorate at St John's College, Cambridge. He is known for his work on 17th-century Italian church music and published monographs on Palestrina (1971) and Lassus (1982). He also published editions of the music of North-Italian composer Alessandro Grandi, making his music more widely known, and several anthologies of madrigals and Italian church music.