Beethoven Piano Sonata No 27 in e, Op 90

Ludwig van Beethoven's Piano Sonata No. 27 in E minor, Op. 90 was written in the summer of 1814, Beethoven's late Middle period, and was dedicated to Prince Moritz von Lichnowsky. At the time Beethoven composed the sonata, the lowest note on the piano was an F. This posed a challenge for a work in the key of E, as the bass end of the instrument fell one semitone short of the tonic. Charles Rosen argued that a performer on a modern piano should make alterations to Beethoven's score to utilise the low E that Beethoven could not.         WIKIPEDIA
                                                

VIDEO: Pavle Krstic, piano Kulturni centar Beograda, 04.05.2015. The Curtural Centre of Belgrade