Published: May 14, 2014 6:53 PM EDT
Updated: May 14, 2014 6:58 PM EDT

LEE COUNTY, Fla.- Heavy metal music is not for the faint of heart. It's often full of violence and obscene lyrics, but did you know there are often no age restrictions on concerts?

A WINK News investigation uncovered that was true at the recent Fort Rock concert at jetBlu Park. It's not just what kids heard at this concert. It's about a little girl who went from her father's shoulders to center stage.

The video has been posted to YouTube. A 9-year-old girl is seen on the stage with a heavy metal rocker screaming obscene lyrics into her ear, and it was all caught on video by her dad. Then, he posted it on YouTube for all the world to see.

So, WINK News wanted to know: is it too vulgar for kids? You decide.

In the video, you can see Ivan Moody from Five Finger Death Punch with Olivia on stage in front of thousands of people. The lyrics had to be bleeped out for tv news and was even too obscene for most cable shows. Ivan wants Olivia to sing along, in the video, and to say the words even we can't let you hear on TV, but she won't.

Olivia's father, Mark Douglas said what we bleeped isn't too obscene for his 9-year-old daughter Olivia to hear.

"It's a bad word yeah," he said. "It's a word. That's all it is. It's a word...Everyone cusses."

Mark and Olivia, who live on the east coast, travel Florida to every heavy metal concert they can find. At 9, Olivia has heard it all.
     
"They're going to hear it at school. They're going to see it on TV, movies...It's everywhere," said Mark. "You're not going to get rid of violence....ever. You're not going to get rid of cussing, swearing."

"This is a form of abuse," said Miguel Fernandez, a Fort Myers attorney. "This child is being used as a prop."
     
Fernandez counsels families and works with school kids, teaching then life lessons and how to succeed.

"I feel sorry for this child. This child is helpless in that position. What does this child do? She's frozen," he said. "To hear lyrics like that, what does it promote? It promotes violence. It promotes criminal mischief. It promotes...just chaos."

Lee County Sheriff Mike Scott has been on a mission to protect children from obscene rappers and rockers who perform in Lee County. He was a vocal critic of Florida Gulf Coast University's plan to bring Ludacris and Kendrick Lamar to jetBlu Park last fall, saying the Sheriff's Office wouldn't provide security.

FGCU moved the concert.

About this latest concert, Sheriff Scott said, "Words can't describe my disgust, and this should never, ever be allowed in a county park."

National promoter "Danny Wimmer Presents" and "AEG Live" booked the Fort Rock concert.

Wimmer said, "While we may not always personally agree with the actions of particular artists performing at our festivals, we support free speech and artistic integrity."

Our investigation uncovered a lot of parents make the same decision Mark Douglas did. We found other videos of Five Finger Death Punch concerts from all over the country with more kids onstage, being encouraged to sing the sordid song.

So. we went to Vero Beach to ask Olivia's dad how a concert like this is appropriate? He told us about losing Olivia's sister in a car crash five years ago and said now he and Olivia are inseparable.
     
"She goes to a church every Thursday and takes piano lessons," said Mark. "She's a normal kid...just loves metal. It's in my blood. Evidently it'll drip down into her blood."