Wiktionary
n. A style of music popular in the 1950s and 1960s, intended to evoke in the listener the feeling of being in some other place (an island paradise, outer space, etc.).
Wikipedia
Lounge music is a type of easy listening music popular in the 1950s and 1960s. It may be meant to evoke in the listeners the feeling of being in a place, usually with a tranquil theme, such as a jungle, an island paradise or outer space. The range of lounge music encompasses beautiful music-influenced instrumentals, modern electronica (with chillout, and downtempo influences), while remaining thematically focused on its retro- space-age cultural elements. The earliest type of lounge music appeared during the 1920s and 1930s, and was known as light music. Contemporaneously, the term lounge music may also be used to describe the types of music played in hotels (the lounge, the bar), casinos, several restaurants, and piano bars.
Usage examples of "lounge music".
Now finally the lounge music had shifted to something that he was able to put up with.
They had met an hour before outside Zee Bar in Saigon, a yuppie spawning ground where no one did any serious drinking, and they had taken a table amid potted palms and aqua lighting and piped-in lounge music in a dim corner of the place, which was almost deserted at that hour of the afternoon.