WLS-FM

WLS-FM is a Chicago classic hits radio station. The station was founded by ABC, and was sold by Disney to Citadel Broadcasting in 2007; it is now owned by Cumulus Media, following its 2011 merger with Citadel. WLS-FM broadcasts from studios located on North State Street in the Chicago Loop, and its transmitter antenna is located atop the Willis Tower. The station's official call sign changed to WLS-FM again on June 26, 2008.