sentences:  The Orchestras have a reputation for tackling challenging repertoire., recent performances had included Gershwin’s "Rhapsody in Blue" and "La Valse" by Ravel (both performed by Main Orchestra) and "Der Rosenkavalier Suite" by Richard Strauss and Curtis' "Paths to Urbino" (performed by the U13 Orchestra).The NCO has been on tour, to Italy in 2008 when Lady Susanna Walton (widow of Sir William Walton) invited Main Orchestra to play in the Walton's open-air theatre within the botanical gardens of La Mortella on the island of Ischia.