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.
LFOToll + Valhalla Room + ProQ 3 + Native Ableton Plugins.
Instrument Loop 1 / Loop 2
Sample pack String Theory: Organic Trap & Processed Acoustics
Loop name X10_ST_130_ukulele_hyper_multiplet_Cm