A lot of coincidences have brough Natalie Venetia Belcon back to Broadway this season. The stage veteran returns to play the iconic Omara Portuondo in Buena Vista Social Club, singing music that she was first introduced to by her parents. "I love seeing the generations coming to see this show and loving it," she told BroadwayWorld's Richard Ridge. "I also love the ones that are now new to it all and discovering it …