rest of the decade. For a brief time, it played free form rock, going up against KQRS-FM. KFMX began playing disco music at night in 1978, soon adopting the format full-time and becoming "Disco 104." By this time, the AM station was playing rock/Top 40 and new wave music as "Musicradio I-95." KFMX gave up disco in February 1980 as the fad faded in popularity, and both stations switched to an adult standards/"Music of Your Life" simulcast, with KFMX becoming KRSI-FM once again. (The KFMX call letters would go to 94.5 in Lubbock, Texas later that year and they remain there to this day.) KJJO In September 1981, the FM station switched to country music, as "K-JO Country", adopting the KJJO call letters. It was up against established country stations in the Twin Cities, market leader WDGY, low-rated KTCR-AM-FM and soon, KEEY. KJJO was never very competitive as a country station. In September 1983, after playing "Old Time Rock and Roll" by Bob Seger for 48 hours straight, the station launched a new classic hits format, "Twenty Years of Rock and Roll", as "K-JO 104." KJJO's ratings improved with the classic hits format, but the station was still not making much of an impact in the market. In 1986, KJJO transformed yet again and introduced a hard rock format, to go head-to-head with the classic rock-leaning KQRS-FM. The KJJO call letters were retained, with the station now calling itself "Hot Rockin' 104" (later "Rock 104"). At its peak, the hard rock format pushed KJJO into the top 10 in the local Arbitron ratings. KJJO was not very consistent with the harder format, though, as it went back and forth between heavy metal and mainstream album rock. In the fall of 1988, KJJO's AM counterpart became a network affiliate of the syndicated heavy metal "Z-Rock" format. Modern rock KJ104 By 1990, KJJO began adding more alternative rock songs to its play list. Eventually, KJJO ditched the heavy metal and mainstream rock altogether and became a full-fledged modern rock station. At first, KJJO called itself "104FM," but later used the moniker "KJ104." During the station's modern rock run, the playlist became more adventurous. Over time, KJ104 garnered positive word of mouth in the Twin Cities area, though ratings were still mediocre. The station's manager complained in the local media that KJ104's listeners were not filling out the Arbitron ratings diaries, the results