Later he became a member in a circle of friends in St. Petersburg of chamber musicians, and with the leaders of that time - Anatoly Lyadov and Alexander Borodin - undertook journeys in Russia and abroad to learn more music, among other places to Bayreuth.
Mitrofan Pyatnitsky | Vladimir Pavlovich Belyayev | Mitrofan Belyayev | Maksim Aleksandrovich Belyayev | Ivan Pavlovich Belyayev |
A copy of his String Quartet No.2 in F, Op.23 (published by Belyayev in 1894), which is conserved at the Cornell University Library, has notations in the margin of the first violin part from a performance with Eugène Ysaÿe.