Book/Printed Material A plaine and easie introdvction to practicall mvsicke, set downe in forme of a dialogue: diuided into three parts. The first teacheth to sing, with all things necessarie for the knowledge of pricktsong. The second treateth of descante, and to sing two parts in one vpon a plainsong or ground, with other things necessarie for a descanter. The third and last part entreateth of composition of three, foure, fiue or more parts, with many profitable rules to that effect. With new songs of, 2. 3. 4. and 5. parts.