
1) Background sound in a store 2) Brand that became generic 3) Carols at the mall, usually 4) Elevator annoyance, to some 5) Elevator music 6) Elevator sounds 7) Elevator tunes 8) Instrumental blather 9) It may be played in elevators 10) It might be piped into a mall 11) Mall background sounds 12) Mall melodies
Found on
https://www.crosswordclues.com/clue/muzak

recorded background music transmitted by radio, telephone, or satellite to built-in sets in offices, restaurants, waiting rooms, etc.
Found on
https://www.infoplease.com/dictionary/muzak
No exact match found.