Under the leadership of music director Marin Alsop, the Colorado Symphony Orchestra released a new CD this year through the Naxos imprint. Recorded live at Boettcher Hall, the disc offers a unique take on two of Tchaikovsky’s more popular symphonic compositions. So far, Naxos has distributed 4,500 copies to retail stores, and sales have been better than expected; we’d call that a coup in the world of classical music.