Hannah Roddy sings ‘O Holy Night’ for Aoibheann's Pink Tie, a children's cancer charity.Irish Independent

An Irish children’s cancer charity has released a video of 14-year-old supporter Hannah Roddy singing a beautiful rendition of ‘O Holy Night’ to help raise funds.

Jimmy Norman started the charity, Aoibheann's Pink Tie (APT), five years ago following the death of his daughter Aoibheann.

"When she died, I asked all the men in the church to wear pink ties... when I was coming down the aisle behind her coffin, I was very moved to see all the pink ties,” he told the Irish Independent.

The organization offers financial assistance to parents of children diagnosed with cancer as well as a number of other initiatives, such as the “chemo duck,” to provide the children with a better quality of life.

"The chemo duck has his own Hickman line. It's transference – when they get their treatment, the duck gets it too. It's amazing how much more at ease the children then are,” Norman explained.

APT is currently working on a "dream with Aoibheann" pillow which will allow children to listen to their mp3 player or call their parents through their pillow. 

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"Some children are too weak to lift themselves up so this will allow them to talk to their parents lying on their pillow."

Hannah Roddy’s ‘O Holy Night’ will feature as part of a radio campaign the charity is running in Ireland in the weeks before Christmas.

Norman believes the campaign is the "first of its kind in Ireland and one of the biggest in the world.”

Hannah has sung for APT events “every year since she was a little girl,” he said.

"We have two big parties for children every year in Dunboyne castle... and a Pink Tie Ball in April.”

Norman hopes the sound of Hannah's voice on the radio ad will send people to watch the video on Facebook and donate via text.

The aim, he says, is to “get APT more well-known.”

"On average 2-4 children will be diagnosed a week with cancer....the more awareness there is (of the charity), the more we can help.”

More information about the charity can be found on the APT Facebook page.

Here is the video: