Millions of viewers were set to watch the television premiere of Oxfordshire singer Zoë Mace's new video today when it was screened on GMTV.

The ITV breakfast programme was to show the Tears in Heaven video to highlight the 12-year-old Cokethorpe School pupil's fundraising work for Downside Up, a charity supporting Russian families with Down's syndrome children.

The coverage comes just a day before the release of sales figures for Zoë's latest album, Once Upon A Time, which was launched on Monday.

It is hoped that the CD will get into the UK's official classical charts.

Tears in Heaven is the first track on the album, but is also available as an internet download to boost funds for Downside Up, which has the late Princess of Wales' best friend Rosa Monckton as its patron.

The video was directed by Oxford Mail photographer Yuri Anderegg and shot at Cokethorpe School chapel, near Witney, on Sunday.

Zoë's mother, Linda, of Witney Road, Freeland, near Witney, said: "The weather was awful and delayed filming by four hours, but Zoë never ever complained. She was frozen solid but was still a complete professional.

"We'd bagged up leaves for the wind machine and had a beautiful dress for Zoë to wear walking around the grounds, but we couldn't do any of it because of the rain. But the video is still brilliant."

Zoë started her singing career in 2004 when she recorded her first album, Little Ray of Light, to thank John Radcliffe Hospital staff who cared for her sister Jodie, four, who had Down's syndrome. The CD collected £18,000 for the Oxford Children's Hospital.

Jodie died in 2005 following open heart surgery, prompting Zoë to raise money for the Down's Syndrome Association through sales of her second album, Songs for My Sister.

The launch of her third album has led to a lot of media interest, including a feature in Hello magazine.

Tonight she is due to perform at television presenter Esther Rantzen's Hampstead home during the 25th anniversary party for the charity ChildLine.

Zoë has also recorded her own rendition of the Christmas carol In The Bleak Midwinter, which will be used to accompany pictures of Bulgarian orphans filmed by award-winning documentary film-maker Kate Blewett.

Mrs Mace said: "Zoë really wanted to help, and singing was the only way she knew how."

Copies of Once Upon a Time are available from HMV and WHSmith.