Photo Courtesy Micelotta

Less than 24 hours after surprisingly releasing her new self-titled album, Beyoncé performed one of the new tracks for her fans in Chicago on Friday night.

The singer rallied the audience to sing with her as she treated them to "XO," a song written by Ryan Tedder and The-Dream for her latest full-length, out now exclusively on iTunes. The track is expected to be Bey's second radio single in early 2014 following the Pharrell-produced "Blow," which will hit Top 40 radio starting next week.

She's currently still on her Mrs. Carter Show World Tour, which will wrap its 2013 dates on Dec. 22 at Brooklyn's Barclays Center.

The new album, for sale now only as a full package for $15.99, will become available for single track purchases starting on Dec. 20. It will be available at physical retail stores and other digital outlets beginning Dec. 21.

Beyoncé is now expected to debut at No. 1 on Billboard next week, with only three days of sales.

Watch Beyoncé perform "XO" below, via fan footage.