My name is Ned Evett. I play fretless guitars exclusively, modifying them with mirrored glass fingerboards. When playing the fretless guitar, the material the fingerboard is made of greatly affects the overall tone; this same effect is found when using different types of slide (brass, glass, bone, etc.) on slide guitar. Playing fretless guitar is a lot like playing slide guitar; just remember your left hand fingers take the place of a conventional slide.