I received Invisible Harmonica a couple days ago, and it went directly into my show, as I found an
immediate place for it in one of my routines. Granted, I use it as a simple "throwaway" moment, but
what a moment!
The prop appears to be well made. Its durability remains to be seen, but
with proper care, it should last a long time.
One drawback, in my opinion, is that there
are no simple lessons given for actually playing the harmonica. There are a few sites online that
can offer some guidance, but it would have been nice to have a couple simple songs included with the
package.