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93.9 LITE FM Program Director Mick Lee said in a statement that those changes "can only mean one thing... Big holiday news!"
The station is advertising a "major" Christmas tunes announcement from Melissa Forman scheduled for 8:20 a.m. Tuesday.
"We can't wait to celebrate our 21st year with you as Chicago's Christmas Music Station...so we hope you'll be listening!" Lee said in a statement.
Last year, the station began playing holiday music on Nov. 6 to uplift listeners during the height of the COVID-19 pandemic.