EXCLUSIVE: 'New Edition: The Movie' -- Behind the Scenes With the Original Group Members

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ET was on set of New Edition: The Movie, where the original group members were keeping a close eye on the young cast that is playing them from back in the day.

Anyone who graduated high school in the '90s remembers hits like "Can You Stand the Rain" and "If It Isn't Love" from the group that laid the foundation for other boy bands like Boyz II Men, NSYNC, The Backstreet Boys and New Kids on the Block. The group reached such enormous heights in the '80s and '90s that three decades later, BET is producing a three-part miniseries based on the iconic singers.

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"It's just amazing that 30 years later people care about your story and your history enough for all of this to be going on," Ronnie DeVoe told ET.

Group members DeVoe, Ricky Bell, Michael Bivins, Bobby Brown, Johnny Gill and Ralph Tresvant will be played by Bryshere Y. Gray, Elijah Kelley, Luke James, Keith Powers, Algee Smith and Woody McClain.

"It's just so exciting to have them here living," Kelley said. "A lot of times we do biopics and we honor our heroes ... when these people are passed away. But to have BBD [Bell Biv DeVoe] and New Edition, Johnny Gill sitting out there in the stands ... you can't ask for anything else."

The series, also starring La La Anthony, Yvette Nicole Brown, Monica Calhoun, Lisa Nicole Carson, Sandi McCree, Wood Harris, Michael Rapaport, Faizon Love and Duane Martin, will follow the group from their humble beginnings in Boston to global superstardom.

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As much of the cast is musically inclined in real life, ET wondered if the actors would put on a cast concert to promote the series.

"If the fans want it, I promise you we could probably put something together," Gray said.

ET has been with New Edition through all their breakups and reunions, including their 2014 tour, which brought Brown back with the guys.

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"It's fun," Brown told ET at the time. "We're just a bunch of old guys that love being around each other."

New Edition: The Movie is set to premiere in 2017.