The Universe of Sound Festival: Iranian classical music. Conservatory Small Hall. 13 Bolshaya Nikitskaya Ulitsa. Metro Pushkinskaya, Biblioteka Imeni Lenina. 495-629-9401. At 7 p.m.
Khovanshchina: Modest Mussorgsky's opera about the Strelets Revolt in 1698, as a result of which thousands of soldiers were beheaded on Red Square. Stanislavsky and Nemirovich-Danchenko Musical Theater. 17 Bolshaya Dmitrovka. Metro Tverskaya, Chekhovskaya. 495-723-7325. At 7 p.m.
Walpurgis Night (Valpurgiyeva Noch): Mark Zakharov's staging on the themes of Venedikt Yerofeyev. Lenkom Theater. 6 Malaya Dmitrovka. Metro Pushkinskaya. 495-699-9668. At 7 p.m.
Igor Prado (guitar, vocals), Raphael Wressing (Hammond organ) and Robert Skoglund (drums) play soul and blues. Roadhouse at John Donne Pub. 56 Pyatnitskaya Ulitsa, Bldg. 4. Metro Tretyakovskaya. 968-665-5114. john-donne.ru, blueshouse.ru. At 9 p.m.
European Orders of Knighthood (Rytsarskiye Ordena Yevropy), to Aug. 30 in the Patriarchy Palace of the Moscow Kremlin. Borovitsky Gate entrance. Metro Borovitskaya. 10 a.m. to 5 p.m., closed Thurs. 495-695-4146, kreml.ru/en.