When string players want to unwind, they gather up some friends and play Mendelssohn’s Octet: half an hour of enchantment, romance and rocketing exuberance from the pen of a 16-year old genius with his imagination on fire. It’s one of those pieces that leaves smiles on the faces of performers and listeners alike. No wonder Artist in Residence Randall Goosby has asked to lead this performance with seven RSNO players. Plus, Associate Artist Kellen Gray introduces a neglected gem by a true American pioneer, Florence Price.