noun
Wasei-eigo from English 'back music'; refers to music played quietly in the background of shops, restaurants, or events.
wasei-eigo (Japanese-coined English), from back music
カフェでは静かなバックミュージックが流れていた。
Quiet background music was playing in the café.
Variant with interpunct; less common but seen in some contexts.
BGM is a more common abbreviation for background music in Japanese; バックミュージック is less frequent but understood.
Wasei-eigo from English 'back music', meaning background music.