WMZK (104.1 FM, "Z104") is a classic rock music formatted radio station located in Merrill, Wisconsin (licensed to Merrill, Wisconsin). The station was operated for a 90-day window by Radio One Communications. The station was originally titled as "Z104" broadcasting an Active Rock format. In 2014, the station switched to "Magic 104", a Hot AC format, keeping the WMZK callsign. The stations rating sunk majorly, with many complaints of the switch. On January 12th, 2015 the station switched back to Z104, again under the direction of Quicksilver, but slightly changed their format, to Classic Rock.