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.
Punch kick, three layers of top loops, progressive cymbals, three layers to the bass, piano chords, progressive arpeggio, original melodies made with plucks, leads and brasses, guitar lick to improve the groove, great royalty-free vocals, ambience effects and a lot of sweeps, risers and impacts.
Sample pack Vengeance Nu Disco Vol 1
Loop name VND Guitar Lick 07 E 120Bpm