Beautiful music (sometimes abbreviated as BM, B/EZ or BM/EZ for "beautiful music/easy listening") is a mostly instrumental music format that was prominent in American radio from the 1960s through the 1980s. Easy listening, light music, mood music, Muzak, and elevator music are other terms that overlap with this format and the style of music that it featured. Beautiful music can also be regarded as a subset of the middle of the road radio format.