Two big Cossacks have to carry him [Fred Astaire] protesting onto the dance floor, and there he does his longest and most absorbing solo of the series so far, full of stork-legged steps on toe, wheeling pirouettes in which he seems to be winding one leg around the other, and those ratcheting tap clusters that fall like loose change from his pockets.

The Fred Astaire & Ginger Rogers Book (1972)