All the instruments, melodies and arrangements have been 100% made by the producer. No free-royalty use loops have been used to create any part of the instrumental of this track. There can only be loops only in the drums section (claps, shakers, top loops, etc) and ambient or vocal samples as a support of the production arrangement.
I always pick very recent vocals so that labels don't decline your track because of overused vocals. I always keep my projects very organized so it will be very easy for you to change thins up if that's your intention.