Warning: DO NOT PRINT THIS THING! As it is this does not play. This was made based on the look of a recorder and best guesses based on illustrations and went through several iterations to attempt a fix, but in the end has several mistakes that renders it... not as good. In other words it looks the part but it doesn't sound the part. Use http://www.thingiverse.com/thing:12168 for one that works.DO NOT PRINT THIS if you want a functional whistle. Use http://www.thingiverse.com/thing:12301 for one that works.