CHBN signed on the air as "91.7 The Bounce" on February 17, 2005. When the station first signed on, the station aired a rhythmic top 40 format, but moved to the current Top 40/CHR format in December 2005. They became the only top 40 station in the Edmonton market when CKRA (96X) shifted their format to play a hot adult contemporary format in August 2005, and then later to country music four months later. After this surprise development, The Bounce shifted to more mainstream pop music.