The multiplier effect can create some rather extraordinary sounds in a musical ensemble--the string section of an orchestra, for example, or a battery of snare drums in a marching band. On Tuesday night at Benaroya Hall, the extraordinary sound was that of four guitars. The acclaimed Los Angeles Guitar Quartet (LAGQ) presented an eclectic program for a nearly packed hall, which included works with orchestra in the first half and three themed sets in the second half (Spanish Renaissance pieces, Brazilian music, and some quintessentially American tunes). more ›