Petroc Trelawny introduces a concert given at St David's Hall, Cardiff. The BBC National Orchestra of Wales and principal guest conductor Jac van Steen are joined by award-winning Swedish pianist Peter Jablonski for the 18-year-old Prokofiev's defiant First Piano Concerto. This is followed by the world premiere of Giles Swayne's Symphony No 1. The concert ends with the Nordic grandeur of Sibelius's majestic Fifth Symphony. Peter Jablonski (piano) BBC National Orchestra of Wales Jac van Steen (conductor) Prokofiev: Piano Concerto No 1 Swayne: Symphony No 1 (A Small World) Sibelius: Symphony No 5.