Bach’s gloriously virtuosic motets are staples of the Trinity Choir repertoire. Today, listeners will hear Lobet den Herrn, alle Heiden and Fürchte dich nicht — a lineup that balances beauty and power. These pinnacles of choral composition will be complemented by two 20th-century masterworks: Herbert Howells’ moving homage to John F. Kennedy, Take Him, Earth, for Cherishing, written in the wake of the president’s assassination; and Benjamin Britten’s evocative and fantastical ode, Hymn to Saint Cecilia, op. 27, written during his stay in New York while World War II raged.