Ozzy Osbourne and his daughter Kelly are making a bid for the Christmas number one, they announced today.
The pair are to release a duet, Changes, on December 8 hoping to cash in on the seasonal market.
It is the first time they have sung together on record, but they face tough competition from Pop Idol finalists and The Darkness.
The original version of Changes appeared on Black Sabbath Volume 4, released in 1972, but the words have been rewritten to reflect the relationship between a father and daughter as they grow older.
The Pop Idol finalists are favourites for the Christmas number one with their version of Happy Xmas (War Is Over).