John Tavener 's Coplas , composed in 1970, for unaccompanied SATB Choir. ' Coplas is a short anthem for voices and tape. It belongs to a much larger work called 'Last Rites' which I have been thinking about for about a year. It is based on the mystical idea of St. John of the Cross which obsesses me - "the more I live the more I must die." Hence the deliberately static nature of Coplas. In once sense Coplas is a prolonged decoration of the 'et sepultus est' cadence from the Crucifixus in Bach's ...