One year after the legendary R&B work was re-released on a 2-CD set in December 2005, Royalty = DJ Kiyo's new mix "MIGHTY 90'S BEATOLOGY" is finally released. And this time, it's a full-volume 2-CD set. Focusing on 90's hip-hop (underground) classics that have influenced many creators, selected from Mr. Kiyo's vast discography, this supreme 2-CD set, 120 minutes and 30 seconds long, is infused with the solid groove of the included tracks and the rough, tight scratches of DJ Kiyo. A truly dope and hot album, it's divided into two parts: 【ILL SIDE】, which is the perfect word to describe it, and 【CHILL SIDE】, which dramatically showcases the deliciousness of instrumentals through double-tracking and other techniques. As expected, it's a masterpiece!