Robbie-Williams will be backed by his Take That on solo hits

The 'Angels' hitmaker ' who quit the band in 1995 to go it alone before returning to the group in 2010 ' will sing a greatest hits set of his own tracks during the fivesome's 'Progress Live' tour concerts and it has now been revealed that Gary Barlow, Mark Owen, Howard Donald and Jason Orange will join him on stage for the segment.A source told The Sun newspaper: "The guys agreeing to sing