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.
Disco house track with beautiful strings section, piano and vocal adlibs. I was using Spire, Sylenth1, FL Keys, Kontakt. Guitars are self recorded and all the other samples are chopped, reversed and creatively mixed. Project file is structured visually and all the automations are properly named. [Length - 4:29].
Sample pack Organic Loops - Disco Strings
Loop name ODS_56A_120_Bm_figure