Identical twins who both play the harp are set to forge a musical career together, making people see and hear double.

Rosemary Munro, who plays the harp with her left hand, and Margaret Scruby, who plays with her right, have previously played their Paraguayan harps as soloists.

The instrument differs from the classical harp because it does not have pedals and is played with a different technique using the fingernails which produces a brighter, more powerful sound.

They learnt to play their unusual instruments when they were 18 and living in South America.

Margaret said: "We bought our harps from a family music group called Los Picaflores (The Hummingbirds) when they returned to South America. We couldn't find a teacher in this country, so went out to South America for a year to learn."

Back in England, Margaret trained as a nurse and Rosemary worked as a physiotherapist, but they are now totally focused on their music. The sisters have recently recorded a compact disc, called Cascade of Strings, accompanied by Mexican guitarist Jorge Carrillo, who often performs with Margaret.