This mashup sounds awesome because he is mixing in key. That means that the songs match harmonically. Sweet but phycho is in the key od D flat major and believer is in the key of B flat minor. These keys match perfectly together since they are relative keys. Great mashup!
I know that I enjoyed and danced all the time… BUT THIS ONE SLAPED ME SO HARD IT MADE ME DANCING LIKE I BECAME A DANCER I LOVE THIS MASHUP SO FAR!!! PLEASE WHY DO PEOPLE THESE DAYS ARE BIENG SO CREATIVE LIKE I CANT EXPLAIN HOW MUCH I APPRECIATE IT AND BIENG OBSESSED WITH THIS MASHUP!! AS A MIDZYONCE TYSM FOR DOING THIS MASHUP I LOVED IT ILL SAVE IT TO MY FAVORITES!!! And it really deserves more support tbh I feel bad :( BUT STILL YOUR AMAZING!!!