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.
1 Drop Main Bass.
1 Break Bass.
1 Reece Bass.
2 Drop Leads.
FXs And Synths.
Sample pack Neon Wave - Dark Matter - Progressive Retrowave
Loop name nw_pr_122_arp_loop_cortex_Gmin