 By the mid-1970s, Detroit had a large amount of music stations, with WWJ-FM, WJR-FM, WNIC, and WOMC all competing with WLDM for the easy listening audience.After being sold to Combined Communications (which later sold to Gannett Broadcasting in 1981), WLDM changed its call letters to WCZY-FM ("Cozy FM") on May 5, 1978.WCZY-FM's format, under Robert Gaskins, was a steady performer in Detroit's Arbitron ratings during the late 1970s, with popular personalities including Paul Bryon (mornings), Bob Martin (middays) and Al Gaige (afternoons).