This is the standard that most of producers work on. In these type of projects the base is original from the producer — chords, melodies, leads, etc — but it contains additional melodic elements that complement the track and come from royalty-free sample packs. They are usually vocal chops, real instrument chords or textures, wobbles basses, glitch effects, etc. In a project file of this category you will find MIDI files created by the producer, but also melodic loops
Process note
I composed and produced this beat around a free royalty use melodic loop from Splice, which is listed below. I complemented it with an original lead, arp layers and the bass line, them all designed with Serum. I used Waves, Fabfilter, OTT and Ozone 9 for the FXs and the engineering.
Melodic loops
Instrument Ambient arp
Sample pack Laxcity Sample Pack by Splice
Loop name LAXCITY_melody_loop_serenity_80_A#