This synth is not quite a one-trick pony, but let's call it a pleasant small stable of jaunty miniature horses. It sets out to provide simple whistle sounds, and in particular cinematic whistle sounds more interesting than, say, the general MIDI whistle-like instruments. Not surprisingly, as with analog instruments, the Shepherd plays far better with simple arrangements than with polyphonic polyglots. If you're hunting for freeware to give you that unique solo,then just whistle over here. I found it easy to download, and not time-consuming to figure out. It's pretty much "plug and play". As with all synths, if one works at it, one can make a displeasing sound, but it impressed me how many shadings of the basic idea one could get with a little knob-twiddling. This is a good device for sample creation, as the whistel efffect is impressive. The synth is advertised as producing a Morricone sound, and it lives up to billing, although one can find a goodish few whistle sounds with a little creative use of the settings. This is the kind of straight-ahead one-purpose freeware vst of which the developer should be proud.