[3] KBBX began airing the syndicated easy listening "Music Only For A Woman" format in 1972, supplied by TM.

[5] At the time, Park was one of the largest broadcast companies in the U.S., with many of its stations also airing beautiful music, including WPAT-WPAT-FM in the New York metropolitan area.

Then, in the spring of 1976, Park made an agreement with Darrel Peters of the "FM 100 Plan" from WLOO in Chicago to go with his beautiful music format.

In October 1995, the station's call sign became KWJZ to complement its smooth jazz format, which had achieved positive ratings in the Seattle-Tacoma radio market.

While smooth jazz still made up the majority of its programming, KWJZ incorporated some chill out music, such as that featured on the syndicated program Chill with Mindi Abair (which aired on Sunday nights on KWJZ), as part of a more broadly defined "smooth music" format.

In the 2000s, KWJZ and other smooth jazz stations began a slow decline in ratings due to changes in Arbitron's measurement system.

Unlike other alternative stations, Click also aired some dance music, such as Martin Solveig's "Hello" and Maroon 5's "Moves Like Jagger."

By that December, the station began to include some hot AC material, such as Kelly Clarkson and Daughtry (primarily artists from sister adult contemporary radio station KRWM), but still retained its modern rock direction, reporting to Mediabase's alternative rock panel.

The formats consisted of all-Frank Sinatra, all-Eagles, all-Garth Brooks, opera/showtunes/musical soundtracks, all-Billy Joel, all-Elvis, all-Red Hot Chili Peppers/Foo Fighters, TV show theme songs, all-Neil Diamond, all-Madonna, all-AC/DC, all-Elton John, all-Beatles, prank phone calls from sister KQMV's morning show "Brooke and Jubal", and all-Led Zeppelin.

The station's website was replaced with quotes from historical figures and lyrics from songs such as The Beatles' "In My Life," Elvis Presley's "Heartbreak Hotel" and Garth Brooks' "Unanswered Prayers," as well as floating question mark bubbles which, when clicked on, either played a female computerized voice soundbite stating "Hey, don't touch that," "What is going on?"

[22] The transition was so abrupt that it was merely the station dropping out in the middle of playing "Otherside" by the Red Hot Chili Peppers, before starting "Greatest Love Story" by Lanco, with the introduction of the new format only coming after the song had ended.

[25][26][27] On February 8, 2023, country radio news outlet Country Aircheck and fellow radio news outlet RadioInsight both reported the station had filed with the FCC to change call letters to KPNW-FM effective February 14; the change required consent from Bicoastal Media, owner of KPNW in Eugene, Oregon.

[28][29] At 9 a.m. on February 14, 2023, after concluding that day's broadcast of The Bobby Bones Show and playing "The Cowboy Rides Away" by George Strait, the station, under the new KPNW-FM callsign, flipped back to an adult album alternative format, with David Bowie's "Changes" as the first song; the change put the station in competition with KEXP-FM and KNDD.