VST, freeware Oorlab
Watercourse

Clip at
youtu.be/aZD8uz8KRCA

After watching a tutorial from JunkieXL about his favorite Plugins I decided to give Native Instruments another try. Two years ago I downloaded their player Reaktor and a Module but never got any sound out of it, as it used a 'slightly' different technique for being activated into my DAW Cubase. Without going too much into details here is a recipy: Download the native NI player Reaktor 6
native-instruments.com/en/products/free
It comes as an ISO file (277 Mb) , you'll need some program to 'mount' it. In my case I found WinCDEmu-4.1 to do the trick.
But then you are only halfway - you will also need to have installed Microsoft Visual C++ 2015 Redistributable (x64 in my case).
During this installing and mounting - the PC needs to be restarted several times, so take some time for this.

A downloadable WAV version with two guitar parts added is available at: soundcloud.com/oorlab/watercourse

Then you have a player, but no sound yet. You may freely download a softsynth from NI. I chose MIKRO PRISM
native-instruments.com/en/prod...ths/mikro-prism
That cannot play in a DAW (Cubase in my case) on its own, but needs to be loaded as an 'ensemble' into the player. After some tweaking and trying, lo & behold, the Reaktor Player is visible in the VST plgin list in Cubase.
The sound is convincing, CPU usage must be quite high.