Music Maestro: Wink's KMPC countdown (which he called "Music Scene USA") was based on the Adult Contemporary charts. At least one aircheck of Wink doing the countdown, which he spread over two days because of KMPC's commercial load, newscasts, a few sprinkled-in oldies and his talk time, exists...from February 21, 1975. The songs on that tape:
#16: Paul McCartney & Wings: Sally G
#15: Jim Weatherly: I'll Still Love You
#14: B.J. Thomas: (Hey Won't You Play) Another Somebody Done Somebody Wrong Song
#13: Donny & Marie Osmond: Morning Side Of The Mountain
#12: Neil Diamond: I've Been This Way Before
#11: Al Martino: To The Door Of The Sun
Only one of those songs (B.J. Thomas) was on the KHJ Thirty that week. And it's a safe bet that the rest of Wink's countdown (those six above are the only ones in a full hour aircheck) didn't include The Ohio Players' Fire; Average White Band's Pick Up The Pieces or Labelle's Lady Marmalade...all in KHJ's Top 10.
So while Wink did a Top 30 countdown, it wasn't Top 40 music.
The closest KMPC ever came to Top 40 was probably 1952-1956, when it played hit singles by pop artists (Frank Sinatra, Rosemary Clooney, Perry Como). When rock and roll hit, KMPC shifted to album cuts by "good music" artists and a handful of singles that fit.
In fact, in the 1960s and early 1970s, KMPC put out a playlist that could be found in some L.A. record stores. It listed current albums that KMPC was playing and noted that "no attempt has been made to place the albums in an order of preference or popularity". The KMPC tribute site has a shot of two of these playlists...one from 1971, and another from 1973, the year KMPC began playing more contemporary artists. The 1973 list is from a transitory period...showing Stevie Wonder and Jack Jones sharing space on the same radio station:
http://710kmpc.com/Large%20Photos/KMPC-Play-list.jpg
By 1974 or so, it was pretty much hit singles, but again, from the Adult Contemporary charts, not the Hot 100. That's how it stayed until the flip to talk in late 1980. The run at KABC failed, and KMPC returned as a nostalgia station in 1982, enjoying a 10-year run and some surprising ratings success until the flip to sports in 1992.
---Michael Hagerty