Mindless Behavior's Princeton, Prodigy, Roc Royal and Ray Ray are in the middle of a very busy week, promoting their just-released All Around the World album and prepping for the premiere of their new movie, also titled All Around the World.  The group's jam-packed schedule didn't stop them from dropping by New York City's Radio City Music Hall, where they mentored a group of kids who are overcoming illness, extreme poverty, homelessness and more to pursue their artistic passions.

On April 16, the non-profit group Garden of Dreams is giving those kids a once-in-a-lifetime opportunity to perform for their friends and family at the storied Radio City Music Hall.  And that's where Mindless Behavior, and other celebrity mentors like Darryl "D.M.C." McDaniels of Run-D.M.C. and model Damaris Lewis step in.  They sat in on rehearsals Monday, offering their suggestions and encouragement to the young performers.

"I can kinda relate to these kids," Princeton tells ABC News Radio.  Years before he and his Mindless Behavior group mates came together, Princeton says that he was doing auditions "every single day.  Literally, since I was four years old 'til now, and I would get nervous every day."  But even facing his share of obstacles and rejection didn't stop Princeton.  He kept going, and stayed focused.

Princeton's advice to other young people who want to make it in the music business is to "make sure you always stay true to yourself."  In addition to that tip, Ray Ray says it's important to "always deliver.  Deliver your message you wanna give out and no matter, like, if you have disadvantages, make your disadvantages advantages.  You know?"

Even though Mindless Behavior was dishing out their expertise, Princeton says he learned a lot from the Garden of Dreams participants, too.  "You know, when you're in this industry, there's a lot of things you have to worry about.  So, just seeing the kids and what they have to go through and hearing their stories makes me just really wanna just live life to its fullest, and not take anything for granted," Princeton explains.

The Mindless Behavior guys went from little kids with big dreams to become internationally known teen heartthrobs, and they'll share their story in their new movie All Around the World.  The documentary and concert film premieres in theaters this Friday.

For more information about the talent show at Radio City Music Hall, check out the Garden of Dreams Foundation website.

Copyright 2013 ABC News Radio