What a remarkable, useful instrument! Between this and Big Tick's Cheeze Machine, one has an awesome arsenal to create unbelievable sounding pads. The interface is sparse--big deal, though, given how cool it sounds. It has only three presets: strings, brass, and choir--all of which can be tweaked with the "quality" knob. This let's you control how "lo-fi" you want the sound to be. It also has the requisite attack and decay knobs. The pinch here is that you only have three options for these: short, medium, and long. I've found these are just fine. I only wish it had the most famous of mellotron sounds (Strawberry Fields). Hopefully an update will provide that flute sound. All that said, this is a such fantastically usable instrument, you'd be crazy not to download it.
[This is an amendment to my review. I've now used this fabulous vsti for a few months. Since I've been using it, I've heard other CDs that have the same exact sound, making me think that the word is out on this instrument. The new Opeth CD (Damnation) has Mellotron strings and choir all over it. Word is that Steven Wilson from Porcupine Tree (who produced this disc) loves the Mellotron and played the vintage keyboard on the Opeth CD. My point is that it sounds EXACTLY like Mellosound! Personally, I think that he just said he used a real one to sound cool and retro. :) It would have been a hell of a lot easier just to use Mellosound. A fantastic plug-in, especially when complemented with MultiLens.]