The base is original from the producer (chords and melodies), but is complemented with elements that complement the song that come from samplepacks, usually, vocal chops, guitars, wobbles sections, glitch effects. It is the standard in which most of producers work, in a project you will find MIDI files made by the producer, but also melodic loops.
In this project i used Serum, Operator, Sylenth1, Ozone 8. I also cutted a cool guitar to make the drop melodic and punchy
Sample pack Osaka_Sound_Baby_Cry_Emotional_Guitars
Loop name OSBC_Guitar_Melody_Loop_03_Dmin_90bpm