Los 40

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Los 40 (stylized as LOS40, formerly Los 40 Principales, Spanish: Los Cuarenta) is a Spanish Top 40-themed music radio station that broadcasts current and recent music, primarily focusing on genres such as pop, dance, electropop, Electro Latin, and Reggaeton. The brand is operated in various Spanish-speaking countries by PRISA Radio. It is recognized as the first thematic radio station in Spain, with an audience of almost three million listeners.^[1] Originating as a music show at Radio Madrid (now Cadena SER) in 1966, it transitioned into an independent radio station in 1979.

Thanks to the success of the program and the increase in the number of FM stations and receivers, Los 40 gradually expanded its daily broadcast duration, eventually reaching 24 hours of daily broadcasting in 1979 on the new radiofórmula 40 stations, still part of Cadena SER. In 1985, Los 40 began broadcasting via satellite. During the 1987-1988 season, Los 40 became an independent radio station known as Cadena 40, while still under the control of Grupo PRISA, the parent company of both Cadena 40 and Cadena SER.

Los 40 also operates in ten other countries, establishing its presence as a significant international music radio station in Spain and Latin America. The station primarily targets a demographic of individuals aged 12 to 30 years old.

The format of Los 40 is characterized by a youthful and dynamic style, incorporating a casual language that appeals to a young audience. The station emphasizes both music and musical information, as well as the presentation of songs.

Los 40 can be accessed through FM dials, national DTT broadcasting, streaming services, and mobile applications.^[2]