From the RadioWest aircheck archives -
A Saturday afternoon in mid-June 1987, "the Power Lines are open" and Big Jim Donovan is playing the hits on The Z in Seattle.
https://soundcloud.com/westernbroadcast ... ne-13-1987
Later in 1987, this New Year's promo aired on The Z - https://www.youtube.com/watch?v=xV5BNlRrXps
Thanks to Larry D for the YouTube upload.