public boolean matches(InstrumentSpec otherSpec) {
		if (!(otherSpec instanceof MandolinSpec )) {
			return false ;
		}
		MandolinSpec otherMandolinSpec = (MandolinSpec)otherSpec;
		if ( ! this.style.equals(otherMandolinSpec.getStyle())) {
			return false ;
		}
		
		return super.matches(otherMandolinSpec);
	}