As Sert’s submission for the main-lobby mural, American Progress, did not wrap the corners of the wall, he was asked to provide two additional murals for these walls. The north mural, Spirit of Dance, expresses joy and release from the problems of the world. The heavy rope that ties the large central figures together symbolizes mankind being tied to the problems of the everyday world. Six other figures reach out to release them from their bonds, and as these restraints fall away, the central figures dance blissfully.