The Beatles' "Being for the Benefit of Mr. Kite!"

An-other thing I noticed while listening to the Beatles' Anthology 2 is the time change in "Being for the Benefit of Mr. Kite!" (it's in the Sgt. Pepper's Lonely Hearts Club Band version too).  After the line "And of course Henry the Horse dances the waltz," the song changes from 4/4 time to 3/4 time - the time signature that waltzes are in.