Whether singing for British troops in Iraq and Afghanistan or for the Queen herself, classical-crossover vocalist Katherine Jenkins always manages to imbue her interpretations with nuance, regality, and extravagance. Taking up a thrilling set of songs, ranging from Christian hymnals to the music of George Gershwin and David Bowie, Jenkins sets her sights on emotional clarity and an inspirational, celebratory message. She demonstrates her considerable American musical chops on “You’ll Never Walk Alone” from Carousel, and her take on David Bowie’s “Heroes” is heartening and uplifting.