Donna and Joseph McCaul

They took part in the live You're a Star finals after advancing from the Waterford auditions, where they had sung "Amazing Grace". Donna had auditioned for the show in Longford the year before. They reached the final where they beat County Wexford-based group Jade, which took second place in the final after a national telephone vote.[6][7] The siblings were aged 13 and 16 at the time.

Their aim in the Eurovision Song Contest was to finish in the top ten at the semi-final stage, and thus qualify for the final on 21 May 2005. They had travelled in Europe to promote their song on television, taking in destinations such as Croatia and Bosnia and Herzegovina.[8] Despite being unknown, Donna and Joe and the Irish audience were hoping that their lively song would appeal to voters across the Europe. However, they failed to get past the semi-final round.[9] One media report beforehand had predicted, "Everybody knows that the McCauls don't stand a chance, yet we're sending them over to the event in Kiev like lambs to the slaughter".[10] Despite this, the BBC website greeted the news with the headline "Ireland in shock Eurovision exit".[11] Louis Walsh said Ireland had failed because it had sent "two amateurs".[12] Former Eurovision winner Linda Martin said they were "childish and inexperienced" without any "star quality".[13][14] Marty Whelan said, "They worked their little socks off all week" and the Irish Independent said, "They sang and moved with a confidence beyond their years and wiggled their asses with some elan".[15] They were so far Ireland's youngest act in Eurovision as they were 16 and 21 at that time.

Donna and Joe was their stage name on the Eurovision Song Contest – Kiev 2005 two-disc album. Recently the duo have been billed as simply The McCauls, although they have since begun to pursue separate careers.

On 20 February 2006, the McCauls appeared on The Podge and Rodge Show[16] to perform their latest single. The hosts (noted for their sharp wit and cut-throat interview techniques) focused however on ridiculing the pair instead of promoting them. This saw Podge and Rodge cut to a commercial whilst Donna and Joseph sang their new song and return from the break when the song was finished. The episode was heavily criticised and later, co-host Lucy Kennedy insisted they show a recorded version of the performance, only to find Rodge had recorded lesbian kissing scenes over the tape.

Donna and Joe appeared on Fáilte Towers in August 2008.

On 2 August 2008, Donna and Joe appeared as a couple on the Irish reality television show Fáilte Towers broadcast on RTÉ One.[17] The show involved celebrity members taking on different jobs each day as part of the staff of a large country hotel in Ireland. While there they encountered, among other people, fellow Eurovision entertainer, Dickie Rock, as well as a fake wedding, a nudist group and a set of Japanese tourists before "checking out"[18] after being chosen to leave over Big Brother winner Brian Dowling and former Liberty X singer Michelle Heaton. Whilst in the hotel the pair managed to raise over €30,000 for their chosen charity Aware, an Irish voluntary organisation providing support to through depression. Media coverage of the pair's time in Fáilte Towers was scathing, with one report saying: "By definition, this type of reality TV is nothing more than a springboard for wannabe celebs who have somehow scraped onto the bottom of the fame ladder".[19] Don Baker, a fellow contestant on the show, asked Donna to perform a concert with him at the Helix on 18 September 2008.[1]

On 17 November 2008, both Donna and Joe were invited to guest present The Podge and Rodge Show. During the show Donna took over from Lucy Kennedy's spot, whilst Joe was soaked with purple gunge whilst singing the Prince classic "Purple Rain".

On 26 December 2008, Donna was invited to appear on an RTÉ Christmas special, a comedy skit show in which Katherine Lynch starred as Singing Bernie Walsh, a character from her RTÉ show Katherine Lynch's Wonderwomen.

Donna was recently caught out by Jason Byrne on the Irish television show Anonymous, when Bazil Ashmawy disguised himself as a shy man in his early thirties who was lacking in confidence and needed Donna's help to overcome this problem. The show was aired on RTÉ Two sometime in spring 2009.

Donna and Joe sang their Eurovision entry at the wedding of TV presenter Alan Hughes and Karl Broderick (who wrote the song) at the Mansion House, Dublin on 30 September 2011.[20]

Joe studies journalism and media.[3] Donna was one of the backing singers for J. Anvil at the Maltese pre-selection for the Eurovision Song Contest 2011. Her debut solo single was due for release in November 2011.

On 24 February 2012, Donna entered the Irish Eurovision national final with her song "Mercy". She finished in third place.

On 2 February 2015, it was revealed that Donna had made it to the blind auditions of The Voice USA 2015. In September 2015, Joe auditioned for the twelfth series of The X Factor and made it past the arena auditions to bootcamp. However, he was eliminated at six chair challenge stage.