 During his association with the Duo @-@ Art company between 1915 and 1932 , Grainger made around 80 piano rolls of his own and others ' music using a wooden robot designed to play a concert grand piano via an array of precision mechanical fingers and feet ; replayings of many of these rolls have subsequently been recorded on to compact disc . This reproduction system allowed Grainger to make a posthumous appearance in the Albert Hall , London , during the 1988 last night of the Proms as soloist with the BBC Symphony Orchestra in Grieg 's Piano Concerto . 
