Embodiments of the present disclosure provide a protective barrier between a musical instrument and any potentially damaging object that may come into contact with the instrument. While disclosed generally with reference to a guitar headstock, an artisan will recognize from the disclosure herein that the protective barriers consistent with the disclosure herein may advantageously be applied to any edge or portion of any guitar, or even any edge or portion of a wide variety of other musical instruments subject to normal wear dents and dings. The protective barrier may be disposable per use, may be adapted for long term application, may comprise a pliable plastic cap, may comprise a plastic cover, may comprise multiple components, may be transparent to allow the original finish of the instrument to be visible, may be colored for aesthetic value, may be personalized, may be shaped or colored to identify association with a particular type of instrument, combinations of the same, or the like.