In another sign of the times the 2010 Latin Grammy for Best Classical Album went to Fernando Otero, a pianist who came to prominence in a tango band, who is a paid-up member of the New York jazz scene, and who uses more formal, classical structures in his compositions in a way that is completely different from the composer who immediately leaps to your mind as a comparison, Astor Piazzolla. He's at SFJAZZ this weekend and if you like contemporary Latin American sounds, you'll definitely be pleasantly surprised at the variety that Otero finds in his Buenos Aires roots.