The WAYL call sign has been used by other broadcasters in the past, including 93.7 FM (now KXXR) in Minneapolis-St. Paul, Minnesota, which programmed a beautiful music format popular in the 1960s and 70s. It often referred to itself as "The Beautiful WAYL," pronouncing the call letters as "whale." In 1961 Jack I. Moore built and managed WAYL FM, and produced the first FM stereo broadcast between Chicago and the West Coast, working under great pressure to get on the air in time for a major exhibition on November 16, 1961.
