On 10 September 2009, the choir joined the RTÉ Concert Orchestra and some of Ireland’s most popular vocalists at the National Concert Hall in the sell-out ‘Mooney’s Tunes’ concert organised by RTÉ presenter Derek Mooney. The programme for this was made up of Derek’s listeners’ choices. The DCC, versatile as always, was happy to oblige, with numbers ranging from ‘Two Little Boys’ to the Hallelujah Chorus.