Imagine yourselves in a tropical forest. You see here pendulous trails of brilliantly-coloured flowers; there, bunches of gaudy fruits: high up, above your heads, filmy fronds of foliage wave in the breeze; at your feet gnarled and far-rambling roots wander in every direction. You wonder if you are beholding some fabled creeper of monstrous growth, or whether fruit, flowers and foliage belong to different plants that have become inextricably entangled. You attempt to follow a young shoot to its parent stem, and thence to its root; you find yourself baffled and baulked at every turn. Set yourselves the task of tracing the history of the creations named Intermezzi, Intermedii, Intermèdes, or Interludes to their source or sources, and you will experience similar feelings.