Music, music, everywhere! Camerata San Antonio will present its second program of the new season, “Longing,” which will showcase a selection of piano trios. The beautifully curated program explores the theme of longing through works of Mel Bonis, Schubert, Weinberg and Brahms. The trio of performers includes violinist Matthew Zerweck, cellist Kenneth Freudigman and pianist Viktor Valkov. They will play …