The present invention is an apparatus which enables a harmonica to be
removably attached to a string instrument such as a guitar without having
to modify the physical aspects of the guitar and which retains the
harmonica so that it can be immediately located and grasped into a
playing condition so that a musician can play the guitar or other string
instrument, immediately switch to playing the harmonica, and then return
the harmonica to its location on the guitar and continue to play the
guitar. More broadly defined, the present invention includes the concept
of removably retaining a first musical instrument to a second musical
instrument by a magnet.