Time Traveler said:
From what I was told at the time, right around 1985, research came back indicating such a negative reaction to the WCOZ call letters, in the market, that the ownership at the time, decided to jetison the call letters. Probably blow back from the 1980-1983 hard rock format...
I don't think the hard rock format, which was called "Kick Ass Rock'n'Roll", lasted even that long. The WCOZ progressive AOR format ran from 1975 to around 1980, when apparently management wanted to do something to improve ratings, as heritage AOR competitor WBCN had gained ground against them again by incorporating some of the more accessible trendy New Wave that was becoming very popular in the late '70s, along with a more focused selection of classic AOR.
WCOZ's focused "stoner" album rock format, which worked well for them in the mid-'70s back when WBCN was still a very eclectic (unfocused) "free-form" progressive station, was sounding dated and anachronistic by 1980 against WBCN's new trendy approach. Not wanting to duplicate WBCN and their New Wave sound, WCOZ brought in radio consultant John Sebastian (not the Lovin' Spoonful musician) to flip them from AOR to a hard rock format called "Kick Ass Rock'n'Roll".
The hard rock format broke ratings records in Boston for just a few books, then it quickly crashed and burned out, while WBCN again flourished with their updated AOR/New Wave approach at the time. By 1983, WCOZ had given up on rock and was into it's last format with those call letters, a bland AC format which couldn't compete with the many other established AC's on the Boston dial at the time. In late 1983, WCOZ flipped to Top 40/CHR as WZOU "The Zoo".
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You are pretty much right on with your WCOZ assessment, but they lasted a little longer as a rock station, than you suggest. In mid 1983, they brought in a new PD by the name of Frank Holler from AOR station WCMF in Rochester, NY I believe. He softened the station up a bit but they remained AOR. However, by September 1983, the rumors were flying of an impending format change. The story was that WCOZ would flip to A/C as WHDH-FM!!!! Obviously that didn't happen, but
they did flip to kind of a hip A/C format at the end of October, 1983, with the AOR jocks remaining intact. The ratings tanked!!! Finally during Labor Day weekend, 1984, the air staff was fired, the calls were changed to WZOU and that was when it actually flipped to Top 40.