 By 2000, it had evolved into a full-blown Rhythmic CHR format.In December 2001, the station became known as "105-9 KPO"; soon after, it became "Hot 105-9" with the same format.As a rhythmic station, WKPO fared better in the Janesville area (where its signal was at its strongest), although it did have some success in the Madison area as its format was unique to that market.