The fight against forgery of musical instruments is one of the priorities within the several activities of “Music Marche Accordions” Consortium of Castelfidardo. This was once more underlined on the occasion of the subscription of a protocol between the Chamber of Commerce and the same Consortium, signed in July 2006. The collaboration between all involved people will bring to an improve of the understanding (by the enterprises and by the economic-operators) of the danger and  represented by the falsified products, both for the economical consequences for the production-system, and for the sureness and well-being of the consumer.