A Welsh doctor has invented a device to play traditional-style lullabies to a child in the womb that can later be used to soothe crying babies.

Steve Evans - a foetal and neo-natal psychologist from Abergavenny - has developed a microchip player and recorder which can be worn by expectant mothers then later used to calm an upset baby.

The harness uses MP3 technology to play a synthesis of lullabies taken from across the world at a certain frequency that can be heard by the unborn baby in the womb.

The expectant mother wears a high-tech microchip device playing specially written lullabies for 20 minutes a day and later the recording can be played back.

It apparently offers no health risks and is meant to increase a child's cognitive capacities in terms of it knowing what's going on and to help bonding between baby, mother and father.

Musical bear

The music will also have a calming affect on the child once its born.

The mother and father can also add their voices, singing along to the lullabies.

The baby calm kit complete with musical teddy bear and carrying pouches is being made by the Kenneth A Fogg Company based in Machynlleth.

It goes on sale in January and will cost �149 over the internet.