Within Temptation guitarist Ruud Jolie asks Damian to sing for his side project Maiden uniteD ' ; a collective of musicians that play rearranged acoustic version of Iron Maiden tracks .
Temptation guitarist Ruud Jolie also played guitar during the 2009 DWB tour .
Within Temptation guitarist Ruud Jolie , who also played guitar during the 2009 DWB tour , asks Damian to sing for his side project Maiden uniteD ' ; a collective of musicians that play rearranged acoustic version of Iron Maiden tracks .