This article by Jane Curtis, a Zitherist and transcriber of music for the Zither, was first published some time ago in the magazine of the Fretted Instruments Guild of America (FIGA). With Jane's permission, we are posting her article "Sounding Surfaces and Quality of Tone" here. Jane summarizes four perspectives on what influences the tonal quality of stringed instruments. Zitherists who are curious about how wood itself affects the tonal quality of the instruments will find Jane's juxtaposition of these views enlightening.