Some players feel that the lower mass of the body wings cuts down on low frequency resonance, creating a bright, thin-sounding guitar. neck-through instruments work well in high-volume playing situations that call for definition and clear low end. Some neck-through guitars (Gibson's Firebird, for example) use a mahogany neckpiece. This softer wood provides a warmer, rounder tone more characteristic of a set-in, or set-neck guitar. The Parker Fly Classic combines a neck-through design with light basswood underneath its carbon/glass "exoskeleton" to provide a lightweight guitar with the feel of much denser, harder woods.s.