Radio station WLS was a leading music tastemaker during the 1960s. During night-time hours, its AM signal could be received clearly from Canada to northern Mexi

WLS was a leading Top 40 AM radio outlet in the Chicago market - with a signal reaching much of North America at night - during the 1960s through the 1980s. Thi

Radio station WLS was a leading music tastemaker during the 1960s and 1970s. During night-time hours, its AM signal could be received clearly from Canada to nor

In its 114th year, Billboard remains the world's premier weekly music publication and a diverse digital, events, brand, content and data licensing platform. Bil

Chicago Top 40 Charts 1970-1979 examines the Windy City's top hits as documented by the weekly record store surveys issued by radio station WLS. As rock 'n' rol