Christmas tunes and sweet treats will again be the order of the day when the Lavilles siblings entertain commuters at Thirroul Railway Station next Monday morning.

But while the treat and music are free, commuters will be encouraged to give a gold-coin donation.

Austinmer Anglican Church member Michael Lavilles said all money raised by the siblings will be used to buy presents for up to 14 children at Warilla Women's Refuge.

Mr Lavilles' four children, Christopher, 16, Sarah, 14, Emma, 13, and Peter, 11, will play their trumpet, clarinet, violin and flute, and sing Christmas carols from 6.30am-8.30am.

A few other children from Austinmer Anglican Church will also perform on December 22.

"This is the fifth year they have busked at the station to raise funds for the Women's Refuge centre," Mr Lavilles said. "We hope to raise as much as possible so we can buy presents for the children at the centre. The idea is to show to the kids that some children in the Illawarra do care and hopefully to bring some smiles. They are obviously in sad circumstances and Christmas will magnify their predicament."

Mr Lavilles said the children will also hand out free copies of the Illawarra Mercury and Lindt Christmas chocolate balls to commuters on December 22.