As I stated before, these stations catered to what was popular in the clubs in Houston and some of the music bled into regular airplay. It was niche for it's time in Houston.
In mid-1987,
KRBE took a lean towards dance and began weekend mixshows called "The Friday and Saturday Night Power Mix". To counter, KKBQ began its own weekend mixshow,
Club 93Q. In January 1988, KRBE retaliated by going on location with The Saturday Night Power Mix to a nightclub with the house DJ mixing live on the air. KKBQ scrambled for the next five months to find a club to host a live mixshow. On May 29, 1988, KKBQ launched its first ever weekly live broadcast, called
93Q Live On the Cutting Edge from Club 6400." The music skewed towards an 18+ crowd and eschewed Top 40 hits; true to the show's name, it was a mix of
industrial,
EBM,
new wave,
gothic rock,
synthpop and
Hi-NRG dance. Ironically, a good amount of the music on 93Q Live On The Cutting Edge had actually been heard previously on KRBE's Saturday Night Power Mix.
KKBQ beat KRBE at its own game, and the Club 6400 shows set the standard for future mixshows on radio stations throughout Houston. The Club 6400 shows became so popular among Houston's youthful set that the term "6400 music" became a collective reference for the types of music played at the club, and the reference, to this day, is still understood by many Houstonians in their late 30s to early 50s.
https://en.wikipedia.org/wiki/KKBQ