“Winter Wonderland,” under the co-direction of interim music directors Bill Howes and Claire Bigley. Dec. 5 at 5 and 8 pm, and Sunday, Dec. 6 2 pm; $20, general admission, online or at the door one hour prior to performance. The concert will begin with a romp through the cold and frost, including a Russian sleigh song and the parody “Cold and Fugue Season." Next will be songs of a spiritual nature. The final section of the show will take viewers to a rollicking holiday party. The concert will include some songs sung by Windy City Gay Chorus, others by Aria, and several performed by both groups.