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.
Drums, Vocals, fx-es are samples.
Basses and synths are come from Sylenth and one shot sample.
The project contains a melodic loop from a sample pack. (guitar loop)
Except this loop the other melodies and midis are fully original.
Sample pack Freaky Loops - French House Songstarters
Loop name FHS_120_C_Music Loops_9_FRK