Reply to songs with extended intros and outros

so since i started djing alot more and hanging around alot more guys that have been playing longer than i have i noticed alot of them have songs with intros that make it easier for mixing. here is one example


i was listening to another dj play the other evening and he had an intro of just drums and that bass tone. then after i believe 8 bars drake came in, as opposed to it just starting off with him in the beginning.

Where can i find songs with these intros?