Under which rock format did WMMR become a major local station?

WMMR became a major local station under the album-oriented rock format, or AOR, back in the 1970s. That style really let them play deeper tracks and build a loyal audience in Philadelphia, focusing on the music that mattered to listeners rather than just the biggest hits.

They really hit their stride with the album-oriented rock format, but what made them stand out was how they mixed in local concert promos and gave new bands a shot. I remember sitting in my living room, dialing in on my stereo, and hearing them play whole sides of records that other stations wouldn't touch. That local connection to the Philly scene is what cemented them as a major player.

Album-oriented rock was the foundation, but the real game-changer for WMMR was how they aggressively programmed the "deep tracks" format within AOR. I always respected that they built their entire clock wheel around giving local artists and B-sides airtime when other stations just stuck to the standard hits. That structural commitment to breaking new ground in Philadelphia is what turned them from a signal into a local institution.

Getting their footing with progressive rock in the early '70s, WMMR really locked in as a major station when they shifted to album-oriented rock, or AOR. That format gave them the freedom to dig into deep cuts and build a loyal listener base that stuck with them for decades.