This Saturdays at Six concert will feature the Stony Brook University doctoral student and Brazilian guitarist Octávio Deluchi.  Selections will include works by Heitor Villa-Lobos, Sergio Assad, Astor Piazzolla, Vicente Paschoal, and Joaquin Rodrigo.  The program will be at the All Souls Church at 6 p.m. For more information, call this number: 631-655-7798.