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 track I used Nexus 3 and Serum.
Best Regards, SaeTMusic.
Sample pack MHA Guitars Vol 1
Loop name MHA Guitar Sessions - Acoustic Guitar_Why so funky_Chords 1 (C#m7, Aadd9, E, Badd11) 100 BPM