Abstract: The invention relates to a harmomica holder that is designed to hold two harmonicas at the same time to the base of a guitar or other instrument. A swiveling arrangement holds the two harmonicas and permits them to be tuned by a thumbscrew that allows the user to change harmonicas (and thus the key) swiftly. By placing the holder on the guitar, the apparatus provides the musician with more freedom than the cumbersome, around-the-neck type of holders.