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.
All synth lines original and made by made. VSTs used are from Arturia's V Collection.
Sample pack Atmospheric Techno
Loop name atc_s128_backchat_Dmin