Question: The Symphony No. 6 in B minor was first performed in Moscow on 4/16 December, conducted by  Russian pianist, teacher, conductor and composer also known as who?
Sentence (from "Hans von Bülow"): One of the most famous conductors of the 19th century, his activity was critical for establishing the successes of several major composers of the time, especially Richard Wagner and Johannes Brahms.
Relevant evidence: No