(CNN) -- If anyone knows hip-hop, it's Ice-T. 

The rapper-turned-actor has added a title to his résumé: filmmaker. Ice (born Tracy Marrow) recently sat down with CNN to answer some iReporter questions and discuss his new documentary, "Something from Nothing: The Art of Rap." 

The film explores the genre as art form and includes lots of big names in the music industry, including Kanye West, Nas, Eminem and Dr. Dre. When it came time to find voices for his project, Ice didn't have to look far. 

"I did the film by calling only my friends I had in my address book," the rapper said. "All my homies I'd been in the business with over 20 years. (I told them,) 'I'm just going to ask you questions, not about the money, the cars, the jewelry, the beef, but the craft.' " 

In an earlier interview, the star of "Law & Order: SVU" noted that there was an abundance of rap stars who wanted to appear in his documentary. 

"There's lots of people I would love to have interviewed, but you got to remember the movie only could last two hours," he explained. "At the end of my filming, I had 52 rappers shot. I had 35 rappers waiting to be shot. My first edit was four hours, so I just couldn't fit everybody into the movie, so yeah, there's a lot of people missing, but I think I was able to get a good cross-section of the different styles of hip-hop." 

His decades in the rap game allowed him insider access and candid interviews. 
What is Ice-T's real name?
What are his occupations?
What's his new film called?
Who is featured?
How did he get those people to take part?
How did he know how to contact them?
How many years has he been working?
What will he ask about?
And won't?
What TV show is he on?
Did lots of people want to participate?
How many rappers participated?
How many were still waiting?
How long was the original cut?
How long did it need to be?
Did he get everyone he wanted to appear?
What's his new occupation?
Who did the interview with him?
Does it explore rap as art?
He got people from different styles of what type of music?
Tracy Marrow
 Ice (born Tracy Marrow
rapper and actor
 rapper-turned-actor 
"Something from Nothing: The Art of Rap."
his new documentary, "Something from Nothing: The Art of Rap."
Kanye West, Nas, Eminem and Dr. Dre
ncluding Kanye West, Nas, Eminem and Dr. Dre
by calling them
I did the film by calling only my friends 
they were in his address book
I had in my address book
20 years
I'd been in the business with over 20 years
the craft
 but the craft
money, cars, jewelry, beef
not about the money, the cars, the jewelry, the beef
Law & Order: SVU
 the star of "Law & Order: SVU
yes
 there was an abundance of rap stars who wanted to appear in his documentary. 
87
 I had 52 rappers shot. I had 35 rappers
35
I had 35 rappers waiting
four hours
My first edit was four hours
two hours
 the movie only could last two hours
yes
I think I was able to get a good cross-section
filmmaker
added a title to his résumé: filmmaker
CNN
 sat down with CNN to answer some iReporter
yes
 The Art of Rap
hip-hop
the different styles of hip-hop