Conductor, cellist and champion of artistic freedom dies in his native Russia
                                
                                
                                    (Newser) -
                                    Cellist, conductor, and one-time Soviet gadfly Mstislav Rostropovich, who used to instruct his orchestras to "play as if you are being tickled in the sides," died today in Moscow. Rostropovich, whose 17-year-run as the head of the National Symphony Orchestra tranformed it from a middling ensemble to one...