Halloween Masquerade Ball (to support Moscow Mardi Gras) Halloween, a night filled with fun and freaks, this year will also feature music by Tubaluba, dance performances by La Vaudevillians, fancy finger foods and contests galore as part of A CHARITY Moscow Mardi Gras celebrates over 30 years as a charity organization and aids local youth programs and organizations. Prizes for the winners of the best Halloween costume as well as best masquerade masks will be awarded. Doors open at 9 PM and music starts at 10 PM.