Looking at a 1977 Broadcasting Yearbook, I see KEZX is owned by Roy Park, who also owned Beautiful Music/Easy Listening stations in many large markets, eventually owning WPAT-AM-FM in NYC ("A service of Park Communications"). The Easy format was so popular back then for FM stations. Unlike Progressive Rock or other FM formats, which needed a full staff of DJs, 24/7, Easy Listening was automated.
Some stations had a live announcer on at all times to do weather and headlines. A few stations actually had the announcers list the songs and artists played, although not many. But since the station was automated, the shifts could be six or even eight hours long. Outside the larger markets, many Easy stations only had announcers on duty during morning drive, or maybe one for AM, one for PM. Just play the music and sell the spots. No contests, no drama, just a few deep-voiced mature announcers. Often the station was an afterthought from the AM sister station, which did have the high profile DJs and larger budgets.
In Seattle, in addition to KEZX, there was 100.7 KSEA (Bonneville, co-owned with KIRO), 910 & 95.7 KIXI, 94.1 KUET (co-owned with KMPS) and 103.9 KBRD (co-owned with KTAC, Tacoma). Notice they all have call letters to reflect their character... EZ, K-Sea, Kixi, Kute and K-Bird. Six Easy station in one market.