Franzis 65345 synthesizer kit franzis 9783645653459 the franzis music synthesizer kit lets you build your own little musical instrument you can play notes over two octaves including half tones minims additionally you can use the customisable sound effects tremolo and envelope modulation to give your compositions or interpretations a unique and lively sound this is a self assembly kit that has been designed with the complete novice in mind the main circuit board is fully assembled an