A catchy traditional nursery rhyme. Just don't pay too much attention to the lyrics if you find it eerie. Remember that "mice" is the plural of "mouse".

Songs like this, sung with different voices in different tempos, are called "rounds", so this is a round song :)

Three blind mice, three blind mice
See how they run, see how they run
They all ran after the farmer's wife
Who cut off their tails with a carving knife
Did you ever see such a sight in your life
As three blind mice?