Take one pianist. Combine a classical guitarist. Add a Chilean singer with a sultry voice, and you've got "La Voz de Tres," or "The Voice of Three." The US-based trio brings its international flavor for Latin folkloric songs to the Winchester Cultural Center on Tuesday, Feb. 28, at 7 p.m. The group talks about their jazz-inspired music, the Chilean stories behind their songs, and that magic moment when they first played together.