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.
I used Serum as the pad, atmos/melody, bass, and Kontakt Piano, and one-shot bass. Except for the battery and fx which were used samples.
Sample pack Cymatics - Eternity
Loop name Cymatics - Eternity Acoustic Guitar Loop Dry 4 - 90 BPM B Min