In October, the Department of Music in Arts & Sciences will present recitals featuring three internationally known pianists: Ingrid Jacoby (Oct. 13), Juho Pohjonen (Oct. 20) and Polina Osetinskaya (Oct. 28). Pohjonen’s performance also will feature cellist Zlatomir Fung and violinist Erin Schrieber in the St. Louis debut of “Other Pines,” a recent work by WashU composer Christopher Stark.