A harp, for one, is a stringed musical instrument that is played by plucking the strings with the fingers or a plectrum. It has a triangular frame and usually has 47 strings. The harp has been around since ancient times and is still used today in many genres of music, including classical, jazz, and folk. The crossword solution for 'harp, for one' is BEER, which is an acronym for the four main parts of the harp: base, elevation, elevation rod, and resonator.