Russian composer Alexander Scriabin had a condition called synesthesia, which allowed him to see colors as he heard musical pitches. On April 4-6, 2024, music director Andris Nelsons will lead the Boston Symphony in an exploration of Scriabin’s colorful perspective. With help from pianist Yefim Bronfman, the Tanglewood Festival Chorus, and two lighting designers, the orchestra will play Scriabin’s Prometheus, Poem of Fire, for piano, color organ, chorus, and orchestra. In keeping with the theme, the opening work is Anna Clyne’s Color Field, followed by Wagner’s “Prelude and Liebestod” from Tristan und Isolde and Liszt’s tone poem Prometheus.