- Clement A. Miller
(b Göttingen, c1518; d Brunswick, Nov 29, 1567). German Kantor and music theorist. He was a Kantor at the school attached to St Martin, Brunswick, from 1551 to 1567. In 1566 he published a treatise entitled Musicae practicae sive artis canendi elementa (4/1596) in which he made use of several principles advocated by leading theorists of the time. Following Sebald Heyden (De arte canendi, Nuremberg, 1540) Roggius advocated reducing the three hexachords to two, one employing B♮ and the other B♭. He also simplified the rules for mutation. From Glarean (Dodecachordon, Basle, 1547) he took the theory of 12 modes. In his section on mensural music he introduced several polyphonic compositions, including Ludwig Senfl's six-voice canon Laudate Dominum and Johannes Heugel's Veni Creator for three voices. Part of the appeal of the treatise was its question-and-answer format, a procedure popular since medieval times. (...