Robbie Williams drove his Take That bandmates barmy by lecturing them on aliens and UFOS.It led Gary Barlow to describe the Rock DJ singer, 46, as a "bit mental" when they first got back together as a five-piece a decade ago.Gary, 49, admitted having Robbie in the studio to record the album Progress after a 15-year absence was surreal.He said: "That particular record was exciting for us because Robbie was back."But he was talking to us about bloody UFOs all day and we were like, 'Who is this guy?' In the loveliest way, he is definitely a bit mental."But it was bringing out this other side to us where we were showing Rob how good we were and he was showing us how good he was."Robbie Williams' fans were recently left baffled after he turned.
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