Music legends Earth, Wind & Fire and Chicago have announced that they will reunite for a 30-city national co-headlining summer concert tour. In 2004 and 2005, the two bands teamed up for what is still talked about as one of the great musical spectaculars in recent touring history. A DVD filmed in 2005 of their Los Angeles shows was certified double platinum almost immediately upon release – a tribute to the extraordinary and unique quality of this collaboration.