Two school girls fed up of hearing the same old Christmas songs recycled each year have penned their own festive tune.

Equipped with an old computer and inspired by a reindeer drawing on the back of an envelope, teenagers Leeluu and Mazy King, based themselves in the spare room of their family home in Marshside for the no-budget production.

Now their tune – I’ve gotta Reindeer on my Roof – written one day after school has amassed 11,000 Youtube views and counting. It’s also available on itunes through online music store CD Baby.

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Leeluu 14, and Mazy 12, are both pupils at Simon Langton Girls’ Grammar in Canterbury and proud dad Tony said: “People are saying they love the song, that it’s really catchy and they can’t stop signing it. It’s gone nuts since the girls released it.”

The sisters had a little help from brother Brad, 19, a CGI digital arts and animation student at UCA in Rochester, who pitched in by making the video, while family friend, Lynsey Holt, eight, was the reindeer artist.

Video: I've gotta Reindeer on my Roof

With no record company or manager the girls, who have already had hundreds of online messages of support, are hoping people will share their home-spun hit so it gets in the charts.

The siblings say that it would be fun to beat the X Factor winner to the number one Christmas slot. Leeluu said: “We guess it’ll just be down to whether the media like the song enough to tell people about it and then people sharing it like crazy.”