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Dr. Dre

C Flanigan/Getty Images

After 15 years, Dr. Dre decided to go back into the studio to record his "finale" album Compton: The Soundtrack.

In Dre's weekly show The Pharmacy With Dr. Dre, which aired Saturday afternoon on Beats 1 radio, Dre got real with friends Ice Cube and Straight Outta Compton director F. Gary Gray.

"I found myself being so inspired by the movie that I started recording an album," Dre said of his new record Compton: The Soundtrack. "It's inspired by Straight Outta Compton, and I'm really proud of this."

"Ice Cube is on the album. Kendrick Lamar is on the record, Eminem is on the record, Snoop Dogg is on the record. All my friends came in, old and new. I worked with a lot of new and exciting musicians, producers, singers, rappers. And we all came together to build this thing, and it's going to be my grand finale. The record is crazy."

Dre was worried about the film at first, saying he never thought it could be done because there were so many things that could go wrong. But Gray did it right, he says.

"The heart and the emotion is there. You come to understand who we are as people, and what it took to make this s--t happen," Dre notes. "It's more than just the music, I think the music is the co-star in the movie, and our characters, being able to understand who we are and what it took to get this thing done, I think people are really going to gravitate towards that and really appreciate it, and be inspired by it as well."

"I kept it under wraps," Dre says of the recording. "But now the album is finished—it's bananas."

WATCH: New Straight Outta Compton trailer released

Compton: The Soundtrack will be exclusively available on Apple Music Aug. 7.

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