From wild to sublime and back again, this program is a study in contrasts and character. Centering the first half, Soper’s slyly profound work intertwines vocal and instrumental gymnastics, bookended by Debussy’s concise and colorful Cello Sonata and the gorgeously inventive Introduction and Allegro by Ravel. Franck’s powerful Piano Trio evokes French organ style with both delicate filigree and monumental explosions of sound.