A cap composition that can mechanically attach to a stethoscope headpiece, the cap composition having a cap； a cap element having a design that includes a shape and characteristic dimensions that enable the cap to mechanically attach to a stethoscope headpiece； and a speaker attached to and positioned on or at least partially within the cap, such that when the cap is attached to the stethoscope headpiece, the speaker is either touching or proximate to the stethoscope diaphragm such that a sound or signal emitted by the speaker can cause the stethoscope diaphragm to vibrate.
