Does music leave scars on buildings like it does on hearts? Maybe a venue is like a coffee cup, and the inside gets stained after years of use, darkening and thickening and flavoring every cup thereafter. Or like resin on a bowl, and you could take a paper clip to, say, the Fabulous Fox and scrape off the gooey leavings?
Maybe venues have favorite bands; maybe they trade tapes; maybe some nights, they suffer through the acts just like the audience.
An old roadie I know told me that if you were in a theater on a night it was dark, and you listened carefully, you could hear it singing to itself. I don’t know how trustworthy old roadies are, though.