BELGRADE, Serbia (AP) — An amateur pop choir that started with a couple dozen singers in a small Serbian town has found unexpected success across the country. Its motto? Anyone can sing. While community choirs are common in other countries, they are relatively rare in Serbia . The no-stress and fun approach has attracted hundreds of people, mostly women of all ages. Modeled after similar projects abroad, the choir is encouraging “everyone from 5 to 105” to join and sing for joy and stress