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.
Steady bassline approach tied down with crafty chords. Paz revives the true garage atmosphere
Sample pack Audioteknik Deep House Roots
Loop name DHR_124_String_Pad_Looped