I'm with the others here who use common commercial records that people are generally familiar with, rather than 'audiophile' records. I used to use a Crystal Gale "Eyes" track from a budget label compilation (Liberty?). For true audiophile verisimilitude, the 45rpm Analogue Productions remaster of "Way out West" is pretty spectacular, but as others have mentioned, so is the Classic Records 45 of Satchmo doing the "St. James Infirmary" and the Analogue Productions 45 remaster of "88 Basie St."
Another 'standard issue' is the Guy Van Duser track "I'm Coming Virginia" from "Get a New Broom...and Sweep Your Blues Away." (Rounder). (Easily and cheaply found used if it is not still in print). I could think of ten more, but I'm already over the line. You wanted one.
All vinyl.
