QUODLIBET
quodlibet
(noun) an issue that is presented for formal disputation
Source: WordNet® 3.1
Etymology
Noun
quodlibet (plural quodlibets)
(music) A form of music with melodies in counterpoint.
(art) A form of trompe l'oeil which realistically renders domestic items (paper-knives, playing-cards, ribbons, etc).
(philosophy) A mode of philosophical debate popular in the Middle Ages, in which any question could be posed extemporaneously.
Source: Wiktionary
Quod"li*bet, n. Etym: [L., what you please.]
1. A nice point; a subtilty; a debatable point.
These are your quodlibets, but no learning. P. Fletcher.
2. (Mus.)
Definition: A medley improvised by several performers.
Source: Webster’s Unabridged Dictionary 1913 Edition