 This weekend's concert features music for piano, including works by Mendelssohn, Mozart, and Beethoven, and a rousing encore by pianist Daniil Trifonov. Settle in for Carnegie Hall Live, Saturday, 3 p.m., on 91.1 WSHU and at WSHU.org. Made possible by Suzuki Music Schools, SuzukiSchools.org, and Meadow Ridge Senior Living, MeadowRidge.com.