“ . . . Tríptico is one of the bright new works performed a few years at the Second American Guitar Congress at Wake Forest University. Tríptico is a three movement work in which Sierra has tried to evoke the music of the Caribbean. The rhythms of the folk and popular music of the area are present on virtually every page. This gives the music its main interest; it is not likely that the audience will leave a recital humming any tunes from this piece, but it is very probable they will be bouncing...