This performance will feature the Percussion Ensemble, Philharmonia, and Chamber Orchestra. Tickets available at the door: Adult: $12; Student/Senior: $10; Premium Reserve: $25. Discounted tickets available through the MYSO office in advance. Call 414-267-2950.Percussion EnsembleSCOTT WARD, "Stress Relief" from The Headache MiniaturesALAN HOVHANESS, October MountainTHADDEUS GOTCHER, Cat and Mouse (World Premiere)PhilharmoniaJEAN SIBELIUS, Karelia Suite, Op. 11, mvts. I & IIICHARLES AUGUSTE de BÉRIOT, Violin Concerto No. 9 in A Minor, mvt. I, Cecelia Santiago, violin (Winner, 2018 MYSO Philharmonia Concerto Competition)CAMILLE SAINT-SAËNS, Symphony No. 3 ("Organ") Part IIChamber OrchestraFELIX MENDELSSOHN, A Midsummer Night's Dream, Op. 61, OvertureRALPH VAUGHAN WILLIAMS, The Lark Ascending…