Wowee. I read someone's positive review of it here, ordered a tin of it for myself, and holy cow. It is a little miracle in a can. I cleaned my Bach today, and noticed the patina progressing to a brownish orange haze. I dig the antiqued look, but I didn't like the fingerprints and other blemishes that made it look as if it were just dirty. With not a whole lot of elbow grease, the Maas took all of the discoloration off of the brass and brought out an incredible shine. The horn looks like it's been relacquered, it it so shiny! I will post a pic in a few minutes.