capriccio

noun4

1. •
   A fantastical thing or work.

   • Will this Capricio hold in thee, art sure? — 1604
2. •
   A type of Renaissance landscape painting that places particular works of architecture in an unusual and often fictional setting.

   • Above the drawing-room fireplace there was a painting by Guardi, a capriccio of Venice in a gilt rococo frame […] — 2004
3. •
   A piece of music, usually fairly free in form and of a lively character.

   • The stillness returned, save for the little voices of the night—the owl's recitative, the capriccio of the crickets, the concerto of the frogs in the grass. — 1909
4. •
   A sudden and unexpected or fantastic motion; a caper; a gambol; a prank, a trick.

   • She used to smile at my capriccios; and once she kissed me—actually. — 1873