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.
This record is made using real guitars, Kontakt for bass, arturia for leads, pianoteq for the piano
Sample pack Disco strings
Loop name SO_DS_110_string_stack_baklava_Fmaj