K-391

If you skip to 1:25, you can see K-391 making songs in FL Studio 20.

Here you can see K-391 playing a track through Fl Studio 11. In this accompanying interview from Image-Line, K-391 says "When I was around 14 years old, I wanted to start making these techno/trance songs myself. So I began looking for a way to do it, and boom, I found Fl Studio. After a year I started posting tracks. There was no feedback to be given, but I didn't quit and started posting for another year."

If you skip to 0:57 in this video, you can tell it's FL Studio 12 based on the Piano Roll, but furthermore into the video (1:07) you can see that the Step Sequencer and the Mixer is just like in FL 12.