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
In this track I used Nexus and Serum. This track is super chill. The vocals aren't so good, but instrumental is amazing. Have time to buy a track before you are overtaken, there will be no second chance.
Best regards, SaeTMusic.
Melodic loops
Instrument Arp
Sample pack Black_Octopus_Sound_Ilkay_Sencan_Secret_LAB_V1
Loop name IS_A#_124_Synth_Arp_03