This week Joanna and Stephen are joined by a very special guest, Stephen's personal piano tuner, David Widdicombe. From concert grands, upright 'domestics' and honkytonks, David has tuned them all. Having worked with the world's most prestigious piano maker, Steinway, for 3 decades David tells us about his life working alongside the world's most gifted players, how fractions of millimetres make all the difference and how to find the perfect 'temperament' from your own “Joanna”.

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