Christopher Tyes Sine nomine or Mean Mass is a remarkably original work, showing a command of imitative counterpoint, melodic development, harmonic control and dissonance treatment that taken together have little precedent in England. The editor suggests that Tye offered the work as his exercise for the Cambridge B.Mus. in 1537, and that the university accepted it for performance to celebrate the birth of Edward VI in October that year. For five voices: ATTBarB. viii + 28 pages.