This is the only good song I have made in Caustic 3.1.
I do not know what to say here...
All I can say is that Caustic is a free app (not free if you want to unlock saving and exporting). It is a virtual Midi controller, automated, synthesizers, modualrs, and other good stuff. If you are creative and want to make a song for free, you can download the full Caustic for free. (That much I know)
Please contact me if you would like to use this in a project. We can discuss the details.