are themselves pastiches of south-west Americana

pastiche /pă-stēsh′, pä-/

noun

• A dramatic, literary, or musical piece openly imitating the previous works of other artists, often with satirical intent.
• A pasticcio of incongruous parts; a hodgepodge.
• A work of art, drama, literature, music, or architecture that imitates the work of a previous artist.
  The American Heritage® Dictionary of the English Language, 5th Edition.