Searching for an answer, I spent three days in Cleveland to see how the orchestra prepares a program from first rehearsal to first performance under its music director, Franz Welser-Möst. The program was a study in contrasts: Mozart’s “Jupiter” Symphony and Shostakovich’s Symphony No. 11, which cleverly celebrates the Russian revolution of 1905 while condemning the Soviet Union’s suppression of the Hungarian revolution of 1956. You can hear it at Carnegie Hall on Wednesday, the night after the orchestra performs Verdi’s Requiem there.