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Mel Gibson sings on his pregnant lover’s new album and has a “great voice”, she has revealed.

Ukrainian-born Oksana Grigorieva gushed about the Lethal Weapon star’s talents to CNN.

Gibson, 53, provides backing vocals on the Russian singer’s new album, Beautiful Heartache.

He has also directed videos for four of the tracks.

Grigorieva, 39, who is pregnant with the star’s eighth child, said: “Mel is an incredible artist. He has a great voice.

“He is a visionary. He enabled me to produce this, for my music to live.

“The videos are like dramatic miniature films, a whirlpool of different, exciting, bright images.”

Gibson split from wife Robyn in April.

The Oscar-winning star stands to lose up to half his estimated $1bn fortune in their divorce.