The story I heard is that Mossorgsky wrote it that way because he walked with a limp. He wrote his limp into the time signature. This is probably an urban myt

The story I heard is that Mossorgsky wrote it that way because he walked with a limp. He wrote his limp into the time signature. This is probably an urban myth, as I can't seem to find any verification of it on line in a quick search.