Be swept up in the power great composers can achieve with three instruments. Mendelssohn’s trio—one of his last works—surges with emotional intensity and sweet melodies. Ravel’s trio has its share of melodicism, but also draws upon Basque folk rhythms and revisits the mesmerizing simplicity of the Baroque passacaglia. Darkness hovers over Shostakovich’s trio, particularly in its opening movement, but it also has an elegiac Bach-inspired slow movement and a swirling finale of klezmer themes.