If you have partnered with a VST developer, then they could build their instruments into your project. I do not know if anyone has made a VST wrapper for UE4, certainly not Steinberg who owns the VST format.
If you have partnered with a VST developer, then they could build their instruments into your project. I do not know if anyone has made a VST wrapper for UE4, certainly not Steinberg who owns the VST format.