Abstract: Disclosures teach managing humidity within a musical instrument. For example, a fluid tank, which may be attachable to an instrument holder, may hold fluid deliverable through a conduit into a breathable housing, which may be configured for insertion within, for example, a sound box. A fluid trap may be included within the housing to collect the entering fluid. The trap may also store the fluid during evaporation, increasing humidity in the instrument. A flow regulator may be included within the channel passing through the conduit to manage the fluid flow rate. A measuring device may be included to provide measurements of humidity within the instrument. Management logic may generate, based on humidity measurements from the measurement device, adjustment signals, adjusting the flow regulator to change the flow rate to impact humidity. A detector, indicating overflow from the fluid trap, and/or an overflow structure, capturing overflow, may also be provided.