All melodies are done by the producer. I used Heat Up 3 Plugin (my favorite one) for melodies. The 808 is Short and subby, so it has a different and unusual vibe while listening. The track is typically like Drake, Migos, 6ix9ine and many others. This track is ready for vocal recordings and publishing. Otherwise, if u don't like how it was mixed or mastered but you like how beat is created and how it sounds, you can mix it in your way however you want!