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.
Drums, Vocals, Fx-es are samples.
The synth chord is a melodic loop from a sample pack.
(Hy2rogen - Progressive Tools 5,
Chord & Lead 26 G)
The bass and the other synths/instruments are from VPS Avenger and sylenth.
Except the synth chord the other melodies and midi’s are fully original.
Instrument Synth chord
Sample pack Hy2rogen - Progressive Tools 5
Loop name Chord & Lead 26 G