The 35-year-old actor, who is returning to Broadway later this month for a revival of Sunday in the Park with George, took to Facebook on Tuesday to share an amazing video of himself performing "Finishing the Hat."
Gyllenhaal wanders through the backstage areas of New York's Hudson Theater -- which will reopen with the revival of Stephen Sondheim's hit 1984 show after an extensive renovation -- in the clip beautifully filmed by Beasts of No Nation director and cinematographer Cary Fukunaga.
"This is what happens when Riva Marker (the badass president of NineStories) and I invite #CaryJojiFukunaga to rehearsals for our new Broadway musical. Check out this video we made! #SundayintheParkWithGeorge," Gyllenhaal captioned the video.
Masters of Sex's Annaleigh Ashford will join Gyllenhaal in the production, which follows painter George Seurat in the months leading up to his famous painting, "A Sunday Afternoon on the Island of La Grande Jatte." Mandy Patinkin and Bernadette Peters originated the roles on Broadway in 1984.
Sunday in the Park with George begins previews on Saturday ahead of its Feb. 23 opening, and is set to close on April 23.