By Don Heckman Los Angeles – May 13. (Wed.) Mumiy Troll. The Russian rock band has been around since the ‘80s, paid their dues during the Soviet era, and emerged as one of the most popular Russian groups of the ‘90s and beyond. The Roxy. (310) 276-2222. – May 13 – 16. (Wed. – Sat.)… Read More Picks of the Week: May 11 – 17