The Beatles

On Tuesday the radio was playing news when we got going. It reminded me of the Beatles's A Day in a Life which I then put on. I try to play all sorts of music to teh kids and have them guess who the artist is. This time A saw the info on my iPhone thus "guessed" that we were listening to the Beatles. We discussed the Beatles and its members. They wanted to know why someone had killed John Lenon. I said the killer was crazy. Is that the real explanation?