Bun B recently sat down with Complex to talk about the song “Right Now” off his upcoming third solo album Trill OG. The song features Trey Songz on the hook and lost verses from the legendary Tupac Shakur and Bun’s own fallen partner Pimp C. Bun explained how the song was created and the origins of both 2Pac and Pimp C’s verses.

“It was originally recorded as a live verse and a chorus,” he said. “My verse is from this year, Pimp C’s verse is from the 2000 decade, and ‘Pac’s verse is from the ’90s. ‘Pac’s verse was already there. We gave the producer the tempo. We stripped the track bare. It wasn’t like the track was created and the verse had to fit on it. So we just built a beat around the same tempo that the verse was already recorded to. If I had to guess, [2Pac’s verse] had to be from before the Death Row [Records] beef or it has to be around when he started putting together [One Nation], when he had Boot Camp [Clik] and all of those people. In the song he’s talking about being in New York, walking down 125th, and being at the Puerto Rican Day Parade. Really, it was killing me. It took everything in me to not leak just a piece of it during the Puerto Rican Parade.

“We reached out to E.D.I. from Tha Outlawz, who’s a good friend of mine and cousin of 2Pac’s, and one of the main people helping Ms. Afeni Shakur maintain the estate. So we don’t have any of those other type of issues. And he was like, ‘Man, absolutely, no problems at all. Go for it, it’s a great look.’ And so we did it and I did a new verse and I think the rest is going to be history.”

Complex’s full interview with the Houston emcee can be found here