A holder for mounting a sensory device to a musical instrument includes a bracket having a plurality of first connector elements, a locking mechanism for fixing the sensory device to the bracket; and a plurality of hanger members. The bracket supports the sensory device and each of the hanger members connects at least one of the first connector elements to at least one of a plurality of second connector elements attached to the musical instrument. The second connector elements being spaced apart from each other and the hanger members hold the bracket at a predetermined position.