Malcolm Binns discusses with Christopher Hogwood the way 19th-century keyboard music is affected by playing it on period instruments and using the playing instructions of the time.
The programme was recorded at the Colt Clavier Collection and includes discussion and illustrations of music by Clementi, Hummel, Schubert,-Chopin and Liszt played on pianos made between 1806 and 1868, Producer CLIVE BENNETT