Branded as Radio Without Rules, KRKY has a broad rock-oriented playlist which celebrates the old free-form radio concept with a high degree of song familiarity. The station plays Buddy Holly or Louis Prima as well as Steve Earle, the Killers, Van Morrison, and Flaming Lips. You are as likely to hear a chestnut from Paul Revere and the Raiders as well as the new song from Arcade Fire.
Prior to targeting the Fort Collins market, 102.1 made several failed attempts to serve the Denver metro area. In 2000, the station, which up until that point had been a local Estes Park station known as "102.1 K-Rocky" (KRKI), flipped to Top 40 as "U102" under new calls KXUU. The Top 40 format lasted only a few weeks and quickly gave way to Rhythmic CHR under the same name, largely due to new competition from cross-town KFMD 95.7 ("Kiss FM"). The station then morphed into Urban AC, again as "U102," before scrapping the concept in favor of a Dance format as "102-1X" (KXDC). KXDC, in turn, gave way to a satellite-fed Classic Country format known as "102-1 Thunder Country." Following the purchase of Colorado Springs Country outlet KKCS-FM 101.9, 102.1 assumed a simulcast of that station, which remained on the air until nearby KJEB 102.3 (now KCUV) completed its move into the Denver market and obliterated the more distant 102.1 signal.