For years it has been hidden in the dusty corner of an abandoned theatre - a magnificent instrument allowed to moulder away in an Islamist-ruled territory where many consider music 'haram' - religiously prohibited. It miraculously survived last year's war between Israel and Hamas, when the theatre itself was half-destroyed around it. Now, the only concert grand piano in Gaza has been rediscovered. Badly out of tune, it's been brought lovingly back to life by an expert flown in from Paris - to be the centrepiece of a project that's bringing music back to the children of Gaza. Our World was given exclusive access to film the restoration of the piano and its first celebratory playing by some of Gaza's budding young musicians.