At the Romantic Times convention in St Louis many years ago, I spoke with a vendor who had created soundtracks for the different romance genres.
Soundtracks to read by. Completely new concept to me, but they told me it was to create a mood, enhance the reader's expereince with the book. In essence, world building for the reader.
When you're at conventions like these as either a reader or as an author, (or both as was the case for me) you get to know those around you in the lulls when