In 1999, Martin broke into the world of alternative materials and created a whole new class of high-quality guitars: the X Series. In the 20 years since, the X Series has evolved to include multiple design changes and alternative materials. This Grand Performance model, featuring a solid hardwood neck, mother-of-pearl pattern fingerboard and rosette inlay, and morado fingerboard and bridge, harkens back to the earliest days of the X Series. Timeless tone for the modern age. This model is strung with Authentic Acoustic Lifespan 2.0 strings.