This is the standard that most of producers work on. In these type of projects the base is original from the producer — chords, melodies, leads, etc — but it contains additional melodic elements that complement the track and come from royalty-free sample packs. They are usually vocal chops, real instrument chords or textures, wobbles basses, glitch effects, etc. In a project file of this category you will find MIDI files created by the producer, but also melodic loops
I used Serum and royalty-free samples! Massive DNB track!
Sample pack Black Octopus Sound - Neurofunk Machinery Vol 4
Loop name Nm4_Bass_Loop_Restart_01_174bpm_F