This volume continues the coverage of mass music by English composers with the two mass cycles credited to John Bedyngham (d.1458/9) together with fourteen anonymous mass movements that appear alongside them in the manuscripts Trent 93, Trent 90 and Trent 88. Most of this music appears to have been composed in the 1440s. The volume also includes a summary of all that is now known about the life of Bedyngham.