The photo-documentary exhibition from the A.N. Scriabin Memorial Museum introduces the figure of the patron Mitrofan Petrovich Belyaev, a man thanks to whom an entire generation of Russian composers emerged. It is an intimate story about the invisible side of music, the support without which it would not sound so powerful and personal. On the shelves and stands of the "Ekaterinofskaya" library, the story of a man whose name rarely resonates from the concert stage unfolds, but without him, it is hard to imagine Russian music at the end of the 19th century. Photographs, letters, posters, and excerpts from memoirs come together to form a vivid portrait of Mitrofan Petrovich Belyaev - a timber industrialist, publisher, and patron who once decided to invest his money in composers rather than in luxury and social entertainment. The exhibition, prepared by the A.N. Scriabin Memorial Museum, shows how one enthusiast managed to change the cultural landscape of an entire era. Here, the Russian symphonic concerts, quartet evenings, and the legendary "Belyaev Fridays" are recalled, where musicians, critics, and friends gathered around the table, debated premieres and argued over harmonies, and then reconciled over tea. The stands trace how a circle of authors gradually formed around the publisher, whose scores are now considered classics. Separate blocks tell about the support for emerging composers. The visitor sees that behind the loud names stood painstaking, sometimes almost invisible work: financing publications, organizing concerts, correspondence with conductors and theaters. Such details turn the abstract word "patron" into a very concrete human character with habits, doubts, and personal taste. Particular attention is given to Belyaev's connection with Alexander Nikolayevich Scriabin. Documents show how cautious interest grows into deep creative support, while the risky works of the young composer get a chance to be heard. Through these materials, it becomes clearer why for the museum dedicated to Scriabin, the figure of the publisher is so important and why without his help...