The five volume editorial project Repertorium Troporum Bohemiae Medii Aevi presents the textual and musical edition of troped mass chants from Bohemian sources from the 11th to the 16th century.The fourth volume of the complete edition of the mass tropes includes 20 tropes to the Agnus Dei representing the Bohemian tradition from the 12th to early 16th century.Similar to previous volumes with the …