Concert tour inspired on UFO sightings?

The Close Encounters Tour is Robbie Williams' 2006 worldwide concert tour. It kicked off in Durban's ABSA Stadium on 10 April, and ended in Melbourne on 18 December. The tour was a great success financially, with every date selling out the morning the tickets went on sale. Robbie broke the World Record for selling 1.6 million tickets in a single day of going on sale in November 2005.

The name "Close Encounters" from movie Close Encounters of the Third Kind (Steven Spielberg) is the Fanfare Let there be light (Intro) including the famous five-note melody Wild Signals. 'This symbol shows, that "we are not alone"', Robbie said before the tour. The show is a little "Space-show".

source: en.wikipedia.org...

My question is if this concert tour was inspired on the UFO sightings Robbie Williams has had, or if the UFO sightings came after that tour.