What is the future of liturgical song? The answer to that question, says Lucien Deiss, depends upon the development of the liturgy itself and the search for better ways to spread the Gospel. Drawing upon the riches of the past to guide that search, this book reflects on what is desirable today. Making the ministerial function of music and song the point of reference - and the key to all questions - it discusses every musical aspect, from processions, acclamations and responsorial psalms, to hymns, the Credo and the cantillation of the readings. The book outlines present-day practices, makes suggestions for improvement, and contributes sound, creative ideas for the future. Using his broad historical and musical knowledge of the Church's liturgy, Father Deiss takes readers through the Eucharistic celebration. The book reflects not just on the liturgy's repertoire of music and song, but also on the roles of those who participate in its formation: priest, choir, music, liturgist, organist, cantor and congregation.