At a previous job, I bought some cookies for those who worked with me. A worker who was about 20 years younger than me said, "The only way this could have been better is if you'd brought Sick Puppies with you." After a pause, he added, "It's a band."
While I hadn't heard much of the band's music, I'd heard of Sick Puppies and knew that KPNT played their music. The older you get, however, the more I think it's assumed that you haven't heard of certain bands. It's part of the "Hello, old person who is old," implication that comes with being older.