|City||St. Louis, Missouri|
|Broadcast area||Greater St. Louis|
|Slogan||STL's #1 Hit Music Station|
|Frequency||107.7 MHz FM (also on HD Radio) 107.7-2 FM "Pride Radio"|
|First air date||1968 (as KACO)|
|Format||Top 40 (CHR)|
|Callsign meaning||K St. Louis Z|
|Former callsigns||KACO (1968-1970)
(Citicasters Licenses, Inc.)
|Sister stations||KATZ, KLLT, KLOU, KATZ-FM, KSD, W279AQ|
Listen Live (HD2)
KSLZ ("Z107-7") is a Top 40 (CHR) FM radio station in St. Louis, Missouri, United States. The iHeartMedia (previously Clear Channel Communications) outlet broadcasts at 107.7 MHz with an ERP of 100 kW. Its transmitter is located in Shrewsbury, a suburb of St. Louis, and operates from studios in St. Louis south of Forest Park.
107.7 FM debuted on the air in 1968 as KACO, which aired an AC/MOR format until a fire took the station off the air in January 1970. Two months later, the station returned to the air and changed call letters to KGRV, "Music for Groovy Adults," offering a more upbeat AC format, which lasted until 1972, when it once again changed call letters to KKSS, "Kiss 108", but retained its AC format. By 1974, KKSS switched formats to country. A year later, KKSS switched formats to a R&B format dubbed "Black in Stereo". In February 1979, KKSS altered its R&B format and adopted the moniker "Studio 108," with a hybrid Disco-R&B format, competing with WZEN (now KATZ-FM).
In June 1979, the calls were changed to KMJM under the moniker/nickname "Majic 108 FM, Where the music is the Majic!" Majic was wanted to cater to the Black and White audiences as the St. Louis market's first ever "CHUrban" station (a forerunner to the Rhythmic Contemporary format). The station was owned by Keymarket Communications at the time. KMJM would later go on to be among the top 5 stations in the St. Louis Arbitrons during the 1980s, even as they shifted towards a conventional Urban Contemporary direction. In May 1988, KMJM was sold to Noble Communications of San Diego for $19 million. KMJM's signal was one of the best in the St. Louis area, and at this time, the station emerged as the Top R&B/Urban station in Saint Louis. Jacor bought the station in late 1997, but the new owners were not interested in keeping "Majic" on the frequency despite its longterm success. So, on October 20, 1997, at Midnight, after 18 years on 107.7, KMJM was moved to recently purchased sister station 104.9 WCBW, which aired a Christian format. After a 12-hour stunt with a looped heartbeat and announcements redirecting listeners to the new frequency and the launch of a new format on 107.7 later that day, KSLZ and its current Top 40 format, branded as "Z107-7", debuted. The flip was to fill a format hole left by WKBQ, who dropped the format for Modern AC in February of that year. The final song on "Majic" was "Good Girls" by Joe, while the first song on "Z" was "Get Ready For This" by 2 Unlimited.
As for KMJM, the station moved again from 104.9 (now KLLT) to 100.3 FM (the frequency of former competitors WZEN and KATZ) in November 2012. It then dropped its longtime "Majic" brand and urban AC format for classic hip hop in 2014, yet retained its KMJM callsign. (It has since reverted to mainstream urban.) "Majic" would return to the market on W279AQ on May 26, 2017.
12am-5am: JoJo Wright
5am-10am: Jordan 
10am-2pm: Ryan Seacrest
2pm-7pm: Brooke Morrison
7pm-12am: Tight Pants
Former on-air staff
- Sal Danza
- Elvis Duran and the Morning Show
- Sid Kelly (now PD of Cumulus Top 40 WABD in Mobile, AL)
- Kandy Klutch
- Finnigan (now nights at Hubbard Hot AC WTMX Chicago)
- Jet Black
- Boomer (now PD of CC Top 40 WHQC in Charlotte)
- HaZe (now afternoons at NOW 96.3 KNOU in St. Louis)
- Aaron Anthony
- Steve Sykes (now owner of independent audio production firm)
- Aaron Tyler
- Broadway Billy Macc
- Diego (now Creative Services Director at CC Top 40 KDWB Minneapolis and voice talent for CC nationwide)
- Melody Sharp (now independent voice over talent)
- Rich Stevens (now at WFTL Miami, Talk Radio)
- Danny Wright (now at iheartMedia Corp, San Antonio)
- Jill Divine (now doing 10AM-2PM and 7PM-12AM on rival Y98/St. Louis)
- Jay Maddox
- Sean Kelley
- Krazy Jessie
- Harmon Dash
- DJ Mike Justis
- Taylor J (now doing weekends for Z107.7)
- Joe Diniro
- Tommy Wacker
- Jeff Tanner (Kapugi)
- MJ Morning Show-station's first morning show from 1998-February 17, 2012 (now syndicated political talk show host as 'The Schnitt Show')
- The Bobby Bones Show (now on sister station, KSD (FM))
In October 2009, longtime staff member Taylor J was let go from Clear Channel Communications. Although starting off as a daily announcer at the station, she eventually moved to weekends in order to focus on being programming director on sister station KATZ-FM. However, later that month, the station changed its format, firing all employees of the station. Taylor J's weekend show was in association with the KATZ contract. As of early 2011, Taylor J returned to the St. Louis airwaves on CBS' KYKY (Y98) FM.
In January 2014, Taylor returned to Clear Channel, which has since become iHeartRadio, to host her own morning show on KSLZ's sister station KBWX. This reunited her with former co-worker Big Mike, who also recently got promoted to hosting his own night show after many years on Weekends.
- http://hdradio.com/station_guides/widget.php?id=19 HD Radio Guide for St. Louis
- "1". Retrieved 2008-02-25.
- Official Website
- Query the FCC's FM station database for KSLZ
- Radio-Locator information on KSLZ
- Query Nielsen Audio's FM station database for KSLZ