Abstract: This invention relates to the use of a foamed polymeric material in the fabrication of solid-bodied, stringed musical instruments with the preferred material being a homogeneous body of foamed polystyrene having a density of from about 0.5 to about 6 pounds per cubic feet. Since the neck assembly must of necessity have greater structural strength than the body, it is contemplated using a relatively simple disconnect mechanism for coupling same to the body. Although the essence of the invention lies in the fact that with the foamed solid body additional sounding amplification means are unnecessary, electrical amplification can optionally be added to said instruments.