"Louise Bremner" <dame_zumari@yahoo.com> wrote in ...
> Ryan Ginstrom <ginstrom@hotmail.com> wrote:
> 
>> the background music (BM!) 
> 
> One place I do work for insists that the abbreviation of "background
> music" is "BGM", for just that reason. But why abbreviate it anyway?

'Cuz it's always that way on computer game menus/dialogs.
(Or maybe that's just the games I play...)