were used as replacements. Philadelphia soul and Disco In 1971, the station changed to a progressive soul format. The station playlist included R&B, soul and funk, playing what would become the classics of their genre and launching careers of "Philadelphia Soul" acts such as The O'Jays, The Stylistics, Patti LaBelle and Teddy Pendergrass. WDAS-FM's rising success paralleled the red-hot popularity of the new R&B sound developed at Philadelphia International Records. By 1975, as the "Philly Sound" laid the musical groundwork for disco, the station began to integrate more dance music into the station's playlist to go along with its rising popularity. By the end of the decade, WDAS-FM introduced its listenership to new sounds of rap with artists such as Sugarhill Gang, Grandmaster Flash and the Furious Five and Kurtis Blow, as well showcasing local talent like Frankie Smith (of "Double Dutch Bus" fame). By 1980, WDAS-FM was the number one music station in Philadelphia. WDAS-FM's activist voice was as powerful as its musical one. Legendary broadcasters George "Georgie The Man With The Goods" Woods and Edward "Ed" Bradley shaped the political voice of the station. WDAS-FM earned its position as the "voice of the Black community." Its program director and afternoon DJ was a white radio professional, Joe "Butterball" Tamburro. He had a knack for knowing the records that would become successful hits among Philadelphia's young black fans. Tamburro, nicknamed "Butterball" for his rotund size, guided the station through several decades. Competition from WUSL The station was sold in November 1979 to Black-owned Unity Broadcasting Network, and it honed the Urban Contemporary format in 1980. In January 1982, a new competitor signed on when WUSL became “POWER 99fm”. WUSL's popularity forced WDAS-FM to go into a “CHUrban/Crossover” format (which has evolved into the rhythmic contemporary format), playing more dance hits from the Mainstream Top 40 charts while also keeping Rap and R&B. It also further leveraged their community involvement and public affairs programming aimed at both the black and white communities. As the disco era faded, the station focused on Pop, Dance, R&B and Hip-Hop. The station also introduced a new slogan: 105.3 WDAS-FM, We've Got The Juice!, inspired by Attitude's song of the same name. Despite these efforts, WUSL would win the CHUrban ratings battle. By 1992, WDAS-FM evolved into a successful Urban AC format after its AM station flipped to Urban Gospel. In 1994, Unity Broadcasting sold