Question about making small piano roll with VST support

Hi JUCE community. I’m pretty new in JUCE and in c++ audio developing at all, so sometimes it’s hard for me to understang all those documentation etc. I need to make simple app, which will support VST plugins and make output audiofiles something like piano roll (loops) using Python and probably JUCE. I want to make programm by JUCE, which loads audio or MIDI files, then
handle it with VST plutins and finally outputs it in “.wav” format (without GUI, I will make it using Python). My question: How to make it? How just to load file without using special buttons etc. And how connect VST plug in into my project and use it?

Ps: I think, i will connect JUCE with python using boost.python.

Hoping to enlist your help :slight_smile: