He was part of one of the biggest boybands in the UK, and now Duncan James has once again shown why he deserves that accolade after impressing with his amazing vocals.The singer, who will be starring on the new celebrity series of The Circle, appeared live on Mecca Bingo's website on Thursday to give his fans a treat with a special performance.The 42 year old crooned to song All I Care About (Is Love) from the musical Chicago and appeared to be in his element.