WBLK's legacy began in December 1964 as an urban contemporary station that primarily played R&B and soul. The station was founded by legendary Buffalo radio personality George "Hound Dog" Lorenz, who had earlier championed rhythm-and-blues music on other area stations such as WXRA, WINE, WJJL, and WKBW. Lorenz's voice was heard on the station from its inception until his death in 1972. Some on air personalities include Ernie "Mr. Blues" Jones, Roosevelt Tucker, Bradley J. Cool, Chuckie T., James Burns, Mansfield Manns, Jerry Young, Gary Lanier, Ron Baskin, Don Allen Sr. and his son Don Allen Jr., David Stafford, Lee Pettigrew, Don Robinson, Freddie Patrick, Rodney "Rockin" Lee, with Doug Blakely, Jason Denis, and Debbie Sims. WBLK went from a mono signal to a stereo signal in 1974. With a playlist called the "Funky Forty", at 3 p.m. that Monday in July of that year, when Don Robinson flipped the switch and the stereo light flickered on, the first song was "Let's Get It On" by Marvin Gaye. Earlier brands and slogans of the station included FM Stereo 94, Soul Brother Radio, Soul Sister Radio, Soul Brother and Sister Radio, Rockin' Soul BLK, Rockin' Soul 'N' Stereo, Soul 'N' Stereo, Rockin' Soul 94 FM, WBLK Rockin' Soul, K94 FM, The BLK Style, and Power 94. Contrary to popular belief, despite WBLK's format and target audience, its call letters do not stand for the word "We're BLacK" per se; rather, they are a tribute to Benjamin L. Kulick, who was a major financial backer of the station when it first went on the air. In August 1995, D&R Radio, WBLK's original owners and founders, sold the station to Boston-based American Radio Systems. In September 1997, Infinity Broadcasting would purchase WBLK and all of ARS' stations for $2.6 billion. Infinity would become CBS Radio in December 2005. For all of its existence, WBLK's playlist has been very diverse, as the station follows a full-service musical approach and incorporates virtually every genre of urban music. This was partially due to the lack of direct competitors in the market; in 2017, long-time daytime-only station WUFO launched an FM translator, tweaked their format to a classic R&B/hip-hop direction, and rebranded as "Power 96.5", giving WBLK formidable FM competition for the first time ever. Since the early 2000s, the station has "day-parted" its playlist. On weekdays, from 5 a.m. until 3 p.m., the station takes more of an urban AC direction, while more hip-hop content is played between after 3 p.m. and 5 a.m.. WBLK began streaming its programming on the Internet on November 13, 2006, and was sold by CBS Radio to Regent Communications in December 2006.
Throughout the 1980s and 1990s, WBLK also had a significant listenership among fans of urban music in Toronto, which did not yet have an urban-formatted radio station. As a result, many commercials heard on WBLK during this time were geared towards listeners in Southern Ontario. The Southern Ontario audience's reliance on an American station with no Canadian content requirements, in turn, significantly impacted the commercial development of Canadian hip hop and R&B. In 1997, the station even began broadcasting live-to-air Fridays from Toronto's Industry nightclub. Promoted as 'Wreckshop Radio', the club night featuring R&B and hip-hop gained immediate popularity and would go on for years. However, after the February 2001 launch of Toronto-based Flow 93.5 on the adjacent 93.5 MHz frequency, WBLK became a bit harder to find on some radio receivers with weaker tuners, and thus lost much of its prominence in the Toronto market.
