Cubs fans wave the W after a surprise encore of “Take Me Out to the Ball Game.” | Photo: Noelle Ike

In a week full of milestones — the Cubs’ first World Series title since 1908 AND the return of a beloved Chicago icon to Orchestra Hall — the Chicago Symphony Orchestra marked the occasion with a special “fanfare” Thursday night.

After making his long-awaited downtown subscription-concert debut with a grand-slam program of Mozart’s Symphony No. 31, Schoenberg’s Five Pieces for Orchestra and Berlioz’s Symphonie fantastique, guest conductor James Levine led the CSO in a surprise encore of “Take Me Out to the Ball Game,” the theme song of Major League Baseball. With many waving W flags and other Cubs “flair,” the crowd roared its approval.

As he exited the stage, Levine even accepted a W flag from the CSO percussion section and twirled the banner with delight.

Meanwhile, if you missed the CSO’s video, recorded last month with Riccardo Muti, of “Take Me Out to the Ball Game,” click here.

TOP: James Levine swings into “Take Me Out to the Ball Game,” which the CSO performed Thursday night to celebrate the Cubs’ World Series victory. | Todd Rosenberg Photography 2016