What's not to like about a music box mechanism?This little guy arrived and I didn't want to take it out of the factory packaged box that it came in! It looks great with a "classic" design and would make a great gift right there...BUT...In order for any music box mechanism to work correctly it needs to be mounted to a box, plank of wood, even a glass mirror, for it to be heard with full volume and tonal clarity. Example: A cigar box would be perfect if mounted or glued firmly. The volume and tonal difference when mounted is astounding!It has a plastic bottom piece that is attached with three small screws that can be removed if you want to use the holes to secure it to a wooden box or platform.If you are mounting this inside a box, keep in mind that the cranking lever does not remove, so you must compensate by drilling a hole in a location that will allow you to "fish it through" the hole or opening.The mechanism works freely and easily.The musical phrase is somewhat short, but plays "the hook melody line" to your favorite selection.CAUTION: I have not turned the crank handle in the opposite direction (as to play the melody backwards) and I do not intend to, though if you feel brave or reckless, we would appreciate your feedback as to how it operates when "played backwards."I found a large novelty wooden clothes pin and used crazy glue to mount it. What a terrific original little gift! The ideas are endless and quite affordable.I will be buying more of these for crafts and gifts!(I just wish they made the packaging more uglier! - lol.)