A fretboard for a stringed musical instrument, the musical instrument, and a method of manufacturing the fretboard. A unitary body serves as the fretboard and lies underneath a plurality of tensioned strings, extending in a longitudinal direction. The unitary body is elongated in the longitudinal direction. The unitary body includes a plurality of ridges extending transverse to the longitudinal direction and arranged in succession in the longitudinal direction to define separate frets. Each ridge is associated with a plurality of notes corresponding to the plurality of strings and is composed of a plurality of ridge segments corresponding to the plurality of strings. The plurality of ridge segments are disposed adjacent to each other and are shaped relative to each other to correct intonation of the plurality of notes. The method of manufacturing includes forming the plurality of ridges in unitary construction with the unitary body.