Regional Mexican Airplay (also referred to as
Regional Mexican Songs) is a
record chart published on
Billboard magazine. It was established by the magazine on October 8, 1994 with La Niña Fresa by Banda Z being the first song to reach number-one. It features
Latin music information from different genres including
Mariachi,
Norteño,
Banda and
Duranguense, which are frequently named as
Regional Mexican. This chart features only singles or tracks and like most
Billboard charts, is based on
Airplay; the radio charts are compiled using information tracked by from
Nielsen Broadcast Data Systems (BDS), which electronically monitors radio stations in more than 140 markets across the United States. The audience charts cross-reference BDS data with listener information compiled by the
Arbitron ratings system to determine the approximate number of audience impressions made for plays in each daypart.