Valentina Lisitsa’s artistry never loses its luster. Her latest recording of consists entirely of études, short piano pieces often used by students to master their skills on the instrument. Many of these pieces are known for their staggering difficulty, but Lisitsa plays them with cool confidence. On Tuesday’s program, experience this pianist’s mind-blowing speed and skill as she nimbly navigates Chopin’s 25th opus, “12 Études.”