Mercury — The Orchestra Redefined performs one of the Romantic period’s most accomplished works on period instruments during today’s Tchaikovsky Serenade concert. The four-movement Serenade for Strings starts with a stirring and highly accented 36‑bar introduction reportedly meant to echo Mozart’s style. The motif is repeated at the end of the movement and again at the end of the work, tying it all together. Serenade’s second movement, Valse, is often performed alone. Valse should be familiar to the most casual music fan; it’s been used in several film and television soundtracks. Mozart’s Divertimento in D, K. 136, and Mendelssohn’s Concerto for Violin and Strings complete the program. The concert features Antoine Plante, Mercury’s artistic director, at the podium and Jonathan Godfrey (seen above), one of the group’s co-founders, on violin.