KTBZ-FM, also known as 94.5 The Buzz, is an alternative rock radio station licensed to Houston, Texas with studios located in Houston at 2000 West Loop South, Suite 300, and with transmitter facilities located in Missouri City, Texas.
This station first signed on the air on October 15, 1960 as KARO, then becoming KLEF with a classical music format in 1964. On March 13, 1986, the station became KJYY (Joy 94) with an adult contemporary format, then becoming KLDE in 1988 with an oldies format, branded as "Oldies 94.5".
The current format launched at 107.5 FM on October 31, 1994 at 11:00 am CDT. The station called itself "The New Rocket 107.5 - Houston's New Alternative", and changed its call sign to KRQT-FM. Under the direction of new general manager Pat Fant (formerly of KLOL-FM), the station re-launched its format in late May 1995 using the new call sign KTBZ-FM and the "107.5 The Buzz" slogan.