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.
Process note
All layers made on Serum and Spire.
Melodic loops
Instrument LFO Atmosphere
Sample pack HY2ROGEN - Future Rave
Loop name hfr_additive_crypto_a#_wet_126