quest operaAn
opera in which the principal character undergoes a test or a difficult
journey, or experiences hardships before reaching his goal (e.g
. Mozart's Magic Flute).
quickstepA modern
ballroom dance with quick steps.
quodlibet (Lat., 'what you will')A piece containing several popular tunes. The composition
may be improvised or notated and was especially practised by
German composers (e.g. Bach) in the 17th and 18th centuries.