incidental(loosely associated; existing as a byproduct, tangent, or accident; being a likely consequence) adjective [UK: ˌɪn.sɪ.ˈden.tl̩] [US: ˌɪn.sə.ˈden.tl̩]
musica incidentalenoun {f}
incidental music(music played as background) noun [UK: ˌɪn.sɪ.ˈden.tl̩ ˈmjuː.zɪk] [US: ˌɪn.sə.ˈden.tl̩ ˈmjuː.zɪk]