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.
There are 8 layers of leads and the vst I used was Refx Nexus 2, VPS Avenger and for Mid Bass I used sylenth 1 v3 and the break guitar was not recorded by me. it came from free sample packs over the internet
Sample pack found in free internet projects
Loop name SS YAM break P guitar