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.
A synthwave track that would be great for release as a standalone track, and as a backing track for a pop style track. excellent balance of instruments and carefully selected sounds of the time.
Sample pack Neon Wave - Soft Shades - Neon Chill
Loop name NW_NC_90_synth_loop_surfaced_Amin