WTTS is an FM radio station serving Indianapolis and Bloomington, Indiana, in the United States, broadcasting at 92.3 FM. The station's format is classified as Adult Album Alternative or "Triple A." WTTS uses the slogan "World Class Rock" to describe its music mix. The station plays a variety of rock-based music from the mid-1960s to the present, including acoustic, reggae, classic rock, blues and alternative rock. In 2001, WTTS was amongst the first American radio stations to play music by the artists John Mayer and Norah Jones, both of whom went on to become Grammy Award winners. The station maintains studios in downtown Indianapolis and Bloomington, its city of license. WTTS' main transmitter is located in Trafalgar.