(I'm about to show my age here)
Try this on for size. Back when I was in high school, I worked part time in the town grocery store, as a stocker/bagger.
They piped the music into the store's speakers via an 8-track player. Each 8-track tape would last ~4 hours.
We had exactly ONE 8-track tape of Christmas music, and they played it from the day after Thanksgiving, until Christmas Eve (store was closed Christmas day). So if you worked an eight hour shift, you got to hear it twice!
People used to laugh at us, when we would subconsciously start humming or whistling the next tune, seconds before it started playing over the loud speakers!!
