Pianist Jean-Yves Thibaudet and the Philharmonic perform Grieg’s youthful concerto, inspired by Norwegian dances and folk songs. When you hear Dvořák’s Eighth Symphony you’ll agree what he said of himself: “Melodies simply pour out of me” — from lyrical flights and passages echoing the sounds of his Bohemian homeland to trumpet fanfares and exuberant brass calls.