He's the star of the hit show NCIS Los Angeles but even before LL Cool J started acting, he became a household name through his music.
Before the big concert, he sat down with Laila Muhammad for a one-on-one interview.
She asked what he would do if he wasn't entertaining. Check out the video to find out the answer!
LL Cool J on NCIS LA: ‘People are going to be shocked by what happens’