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.
When I started this song,I was looking to work in something more "energetic", so I started this song from the drop making the leads (2 layers), after this I made the Drop drums and the rest of the song.
Instrument Breakdown Ambience
Sample pack SIIK - Selected Sounds
Loop name SLCTD Atmosphere 18 Fmin 126BPM