When most of us go to an orchestra concert, we see anywhere from 30 to 50 musicians on stage. And that’s usually impressive. But when the Warsaw Philharmonic comes to town this Saturday, music lovers will have the chance to see a 110-member ensemble, with a major award-winning pianist to boot. “Seldom does Charleston get to hear a 100-piece orchestra in a theater that seats only 775,” says Jason Nichols, president of the Charleston Concert Association. “Can you imagine how rich the sound will be?” With a full century of history behind it, the orchestra is one of Europe’s oldest continuously performing musical institutions. The Philharmonic will be accompanied by Yulianna Avdeeva, first prize winner of the 2010 International Chopin Competition, and the first woman to win in more than 45 years. For you Chopin aficionados: Avdeeva will play the Romantic composer’s Piano Concerto No. 2 op. 21 in F-minor.