I've done this recently with two different groups of non-audiophile friends/neighbors/acquaintences, most of whom were within 10 years of my (old fart) age, a different song for each group:
1. Di Meola, McLaughlin, De Lucia, "Mediterranean Sundance / Rio Ancho", which is the first track off of, "Friday Night in San Francisco";
2. The Guess Who, "American Woman", off of 2000 remastered, "Live at the Paramount".
Both resulted in positive reactions.