William Byrd and his teacher, Thomas Tallis, were inarguably the greatest composers of Elizabethan England. The primary vehicle for royally-sanctioned musicians of the court was liturgical, and in the court of Elizabeth that would mean settings for Anglican services. However, Byrd was a committed Catholic who nonetheless wrote these masses, motets and antiphons for published volumes titled "Gradualia," volumes I and II. This insurgent act apparently went uncensured, and it is these a cappella works that Chanticleer has recorded here. Given that they would not be performed publicly in a church setting by a large choir, the arrangements are intimate. They are each in the same mode and clef, which therefore creates a mood unbroken, a continuity of feeling that is quietly moving.