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.
An absolute banger drill... Hard hitting drums, thick 808s with cool slides and instrumental that makes you want to conquer the world.
Sample pack Cymatics - Monarch Melodies
Loop name Cymatics - Lost Ones - 138 BPM C Min