discanting

verb
  1. to sing or perform a descant; to sing a melody above a basic melody or harmony
  2. Usage: musical; present participle of 'discant'
  3. to talk at length; to discourse or comment extensively on a topic
  4. Usage: archaic or formal
noun
  1. the act or practice of singing a descant or performing a countermelody
  2. Usage: musical

Examples