The psaltery, a fretless box zither with roots in the ancient Greek psalterion, has functioned as both a sacred and secular instrument throughout the centuries. Its resonant body and plucked strings shaped medieval music, while its appearance in biblical writings and Renaissance art highlights its broad cultural influence. Scholars such as W.F.
Skene associated it with Celtic spiritual traditions, while John Platts noted its use in moments of solitary contemplation. Contemporary adaptations, including the Mexican saltério and bowed versions of the psaltery, demonstrate its flexibility. The instrument’s lasting legacy stems from its dual nature as an emblem of devotion and a multifaceted medium for artistic creation.