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.
The track has a bass with a lot of energy, containing 3 layers synthesized in the serum, and a large sub bass in a single layer synthesized in the serum. It also contains a reese bass that gives body to the entire construction of the track. The drop lead is based on the vocal, along with the synths that come from the break. The break guitar was also synthesized in the serum.
Sample pack Grant Michaels: Trap Keys
Loop name GM_synth_loop_big_hit_bells_70_Dmin.wav