Giving a piano its voice takes eight years of training and a lifetime of discovery. This programme follows the small team at Steinway's technical workshop in London to discover how Jeff Prett, the renowned 'voicer', gives a piece of wood and metal a distinctive voice of its own.
His task is to restore a special piano, a hundred year old rosewood Steinway model 0 belonging to Michael Black. The piano was bought second hand by Mr Black's mother in the 1920s. Now he's planning to hand it on to his talented granddaughter, but it needs restoring if it's to last another couple of generations.