There used to be a guy that played the drums in his truck at a Walmart in Jefferson City, MO in the evenings. I doubt that this is him, but it is pretty similar. https://www.youtube.com/watch?v=WReQmdFP1UQ

It was once possible to find stories and YouTube videos of him with search engines by searching "walmart drummer" (with the quotes), but these days, half the links are about a band that left their drummer at a Walmart in North Dakota.