Question: What society of musicians was founded by Mitrofan Belayev and included Russian composer Natoly Lyadov?
Sentence (from "Mitrofan Belyayev"): He was also the founder of the Belyayev circle, a society of musicians in Russia whose members included Nikolai Rimsky-Korsakov, Alexander Glazunov and Anatoly Lyadov.
Relevant evidence: Yes