Lounge cocktail music is a type of easy listening music popular in the 1950s and 1960s. It may be meant to evoke in 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 cocktail lounge music encompasses beautiful music-influenced instrumentals, modern electronica with chill-out, and downtempo influences, while remaining thematically focused on its retro-space-age cultural elements.
Music is a big part of creating ambiance and atmosphere. Consider your cocktail bar concept and what sounds go along with it (loud, exciting or quiet). What kind of music or entertainment you provide will have to create an atmosphere that reflects your concept or vision.