"Q" format. Like its rival, CKLW The Big 8, WDRQ featured a tight playlist which leaned toward R&B and soul records, but unlike The Big 8, WDRQ was not saddled with Canadian content regulations requiring them to play a certain percentage of Canadian music in their rotation, which enabled them to play only the top hits and enabled them to make strong ratings inroads against CKLW. By 1977, WDRQ was the number one Top 40 station in Detroit. WDRQ also became intimately involved in Detroit. It organized its listeners to gather on a Saturday and clean up Detroit parks, and gave free concerts at Belle Isle Park, including one with Detroiter Bob Seger. PD Jerry Clifton kept the excitement level much higher at WDRQ than other stations by having some sort of festival each weekend and mercilessly promoted the upcoming weekend promotion during the week. CKLW and WDRQ also became personal rivals. CKLW put up a billboard at the cost of several thousand dollars bragging about their latest dominant Arbitron ratings on a major street that all jocks, newsmen and office personnel of WDRQ would see as they pulled into the parking lot of WDRQ. WDRQ did a "black bag" visit to CKLW on a hot Sunday when the jock and board operator were the only one at the station, but because of the hot day, the CKLW jock propped the door open for a breeze, allowing the WDRQ staff to browse around. Disco (1979-1980) Then, on January 24, 1979, WDRQ made a format shift to disco as "Disco 93", inspired by the success of the all-disco format at WKTU in New York City. The move to disco was not received well in Detroit, and WDRQ tumbled out of Arbitron's top 20 ratings within a few months. Top 40 (1980-1982) WDRQ returned to a mainstream Top 40 format at the beginning of 1980 and made a brief return to the top 10 that spring, but the big story in Detroit radio that year was the meteoric rise of album-rocker WLLZ, and WDRQ's ratings once again began to drop and reached an all-time low of 1.4 in the Winter 1982 Arbitron ratings. Urban (1982-1985) In response to this, WDRQ shifted its format to urban contemporary in March 1982, and immediately saw the format change pay off, climbing to a 3.0 share in the Spring 1982 ratings report and to a 6.6