Editing WMMR (section)

== History ==

WMMR began in 1962 as an easy-listening station before converting to progressive rock in 1968, part of the FM rock revolution that transformed radio. The station developed a freeform approach that allowed disc jockeys to select their own music, creating a sound distinct from tightly programmed AM radio. This format attracted rock fans seeking deeper album cuts rather than just singles.<ref name="wmmr"/>

Through the 1970s, WMMR established itself as Philadelphia's premier rock station, with personalities and programming that defined the genre locally. The station's influence on Philadelphia's music scene included support for local bands, concert promotions, and a listening community united by rock music fandom. The station's reach extended throughout the Delaware Valley and beyond via its strong FM signal.<ref name="wmmr"/>

The 1980s and 1990s brought format tightening as consultants standardized rock radio playlists nationally, reducing the freeform experimentation of earlier years. WMMR adapted while maintaining its rock identity, with morning shows and personality-driven programming distinguishing the station from automated competitors. Various ownership changes accompanied industry consolidation without fundamentally altering the station's rock format.<ref name="wmmr"/>