Public Announcement is an American R&B group, which was formed in 1991 in Chicago, Illinois, United States. They teamed with singer R. Kelly on his debut studio album Born into the 90's (1992). The group is known for collection of R&B hit songs like "She's Got That Vibe", "Honey Love", "Slow Dance (Hey Mr. DJ)", "Dedicated", "Body Bumpin' (Yippie-Yi-Yo)", and "Mamacita".

A public address system (PA system) is an electronic sound amplification and distribution system with a microphone,  amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals or at a sports stadium. The term is also used for systems which may additionally have a mixing console, and amplifiers and loudspeakers suitable for music as well as speech, used to reinforce a sound source, such as recorded music or a person giving a speech or distributing the sound throughout a venue or building.