Kaikhosru Shapurji Sorabji (1892-1988) wrote 61 works for solo piano, of which only nine were published before the middle of the 1930s. The last of these publications was the Opus Clavicembalisticum, a work of unprecedented complexity and it is considered one of the longest and most complex pieces ever written for solo piano. It shows the composers desire to push the boundaries of what is possible in piano music and remains a fascinating and challenging work within the realm of 20th-century classical music.