Help on finding the music

Love the series and all. But my main concern is on how to find the music featured throughout the series. I just love it. Yes I'm talking about the useless background guitar tracks. They are amazing. I searched nat geo music and the documentary music seperately with no luck on either side. If anyone has any ideas or info on to find it please let me know.

I tried Shazam on most songs, it's not working. These are mostly nameless tracks recorded by certain score musicians for commercial use on this show. That's why they're so hard to find. Anyway thanks.