This piece is in 3 movements (sections), and is special in that all of the movements are silent, the score having the Latin word for silence three times (tacit, tacit, tacit). Some people think that it is just a joke because of this, as there is nothing to listen to. It was written in 1952, and is 4 minutes and thirty three seconds long. Cage got the idea from being in a soundless chamber, but realising that even here there was no true silence because he could hear his heart beating.