Bach: demonstration of piano in Lehman's 'Bach' temperament

Here I discuss and demonstrate the tuning system rediscovered by Brad Lehman, thought to have been invented by Bach as one way to tune keyboard instruments so that they were playable in every major and minor key, before the much later widespread use of equal temperament. The Lehman tuning allows the pianist to appreciate pieces from Bach's Well-Tempered Clavier in a new way, with subtle changes audible from key to key, although due to the very different piano from Bach's time it cannot said to be authentic. For more information see Useful graphs comparing the properties of intervals in both equal and Lehman temperament can also be accessed at . Further examples of the temperament are to be found in parts of my ongoing Well-Tempered Clavier recordings on YouTube, in the keys of C#, E and also the F minor fugue, here: The claim made about bagpipes in the Prelude in E major might seem a bit far-fetched. Bach's represen