Complex sentence: Valery Khalilov organizer of many festive theatrical events in Moscow which are attended by Russian military brass bands and groups from many countries, including the international military music festivals "The Kremlin Zorya", and "Spasskaya Tower".
Split into simpler sentences: Valery Khalilov organizer of many festive theatrical events in Moscow, and not only, which is attended by both Russian military brass bands and groups from many countries. Among the spectacular event it should be noted, the international military music festival "The Kremlin Zorya", "Spasskaya Tower".