Just a minor gripe, but they could have cleaned it. That's one of the things we did for customers, even if their equipment wasn't terribly dirty. People were impressed by that.
I also had the guys working for me clean out peoples' car ash trays and carpet when the ash tray overflowed onto the carpet. I reminded them that I wasn't asking them to do anything I didn't do, even though the stench from cigarettes disgusts me (always has) especially if the car has been sitting in the Sun with the windows closed. I told them that if nothing else, it might shame the car owner into cleaning it up if they brought the car back for future work.
What songs are on the tape? I see 'Chicago Blues.....'