In 1956 Walton sold his London house and took up full-time residence on Ischia. He built a hilltop house at Forio and called it La Mortella. Susana Walton created a magnificent garden there. Walton's other works of the 1950s include the music for a fourth Shakespeare film, Olivier's "Richard III", and the Cello Concerto (1956), written for Gregor Piatigorsky, who gave the premiere in January 1957 with the Boston Symphony Orchestra and the conductor Charles Munch. Some critics felt that the concerto was old-fashioned; Peter Heyworth wrote that there was little in the work that would have startled an audience in the year the met its iceberg (1912). It has nevertheless entered the regular repertoire, performed by Paul Tortelier, Yo-Yo Ma, Lynn Harrell and Pierre Fournier among others.