An attachment for a harmonica or a pulmonary harmonica may include a resistance band or modified comb which increases respiratory resistance from the typical open holes of harmonicas. The resistance band or modified comb may prevent a broken reed from being inhaled into the mouth.

A device includes two or more units, with each unit connected to one or more other units, each of which includes a cap, a tube coupled to the cap and a reed coupled to the tube. Each tube generates at least one sound frequency and can also include harmonics of that single frequency. Airflow through the body oscillates the reed to produce an audible tone from the device.