Performance fees are paid to artists and publishers of copyrighted songs wherever they are played in public, whether that be on television, broadcast over radio, played over the stereo in retail establishments, or in venues like sports arenas and concert halls.
The traditional methods for determining these fees rely on radio logs, cue sheets created by television and film companies, or sample surveys, which randomly track songs for several hours in bars, clubs, and venues. When devised, these techniques were as accurate as technology allowed. Developments in the decades since, however, could greatly improve precision — and boost the payouts to artists.
Source: Dancing Astronaut