Who hasn't visited a new place and wished to capture -- through some combination of words, pictures, or video -- its essence, so you can carry it with you forever? The Czech composer Dvorak must have felt something similar upon visiting America. His ninth symphony, the iconic From a New World, pulses with the excitement and energy of a young nation, even as it summons poignant echoes of slave spirituals and Native American songs. Now the Boston Civic Symphony performs this evocative masterwork during its first ever Saturday evening performance at Jordan Hall. BSO clarinetist Tom Martin will also perform Debussy's "Premiere Rhapsody for Clarinet and Orchestra" and "Viktor's Tale," from the movie The Terminal. The venerable maestro Max Hobart conducts.