Forty years ago this month, members of Led Zeppelin reunited at Live Aid at JFK Stadium in Philadelphia. They should have stayed at home.

Led Zeppelin were a great band who had a talent for improvising, and it was this talent that led to Jimmy Page saying Led Zeppelin were better than The Beatles.

There are strange coincidences which exist in the creative world, and you can clearly see one in the strange way this Led Zeppelin song connects to others.