Normally an orchestra might go into a deaf school, or work with a group of deaf children.

BBC: Creating music accessible for deaf children

Megan helped found a deaf-services hotline, called Tripod, and a Montessori school that taught deaf and hearing students together.

NEWYORKER: Little Strangers

Bobb also plans to close the Detroit Day School for the Deaf.

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He will first go to a centre for the deaf near the capital Maseru then to a school for visually impaired children.

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Mr Hughes, who teaches deaf pupils at St Roch's Secondary School in Glasgow, said the support he had received had played a "huge part" in completing his voyage.

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The study, by Massachusetts Eye and Ear and Harvard Medical School, looked at mice which were completely deaf and had virtually no hairs remaining in their ears.

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