Fred Astaire's dancing is first rate, and is mixed with Minnelli's Surrealist vision. There are two big dance numbers, the 'Dream Ballet' and 'Coffee Time'.
'Coffee Time' is danced in 5/4 time which is very rare and in this case very finely done, this number has an end of World War Two feeling about it. The movie was filmed at MGM during 1945.
'The Dream Ballet' is some 15 minutes long and is full of very interesting themes, and must have been very expensive for MGM to film. This piece with Astaire, must have pathed the way for Minnelli's later work with Gene Kelley.
A classic film and all followers of dance and Fred Astire should have a copy
Not the best know of Astaire's films, but he does a fair bit of dancing in it and, is a joy to view.
Simple as that.