The 43-year-old singer's son Baylee - whom he has with wife Leighanne Wallace - has appeared on Broadway in musical 'Disaster!', but his father doesn't think he should follow his boyband footsteps.
Appearing on ITV's 'Loose Women', Brian joked: ''I told my son to go solo! I'm just saying, my son's name is Baylee, he's going to turn 16 in November, and he was already on Broadway in New York!
''So he's got it in his blood, but I would encourage him to go solo, just saying.''
Brian and the rest of the group - completed by Aj Mclean, Howie Dorough, Nick Carter and Kevin Richardson - have all settled down and raised families since first bursting onto the scene with their self titled debut album in 1996.
Explaining why they've been gone so long - their last album 'In A World Like This' came out in 2013 - Kevin said: ''We're busy at home with our families, our kids, and also we have a Las Vegas residency that we've been doing as well. And making an album!''
It means now that the group move at a different pace, and make sure that they all get time to be with their families.
AJ added: ''You have to plan accordingly. We all try to be respectful of each other, our private time.
''We try to map tours around solo endeavors, birthdays, our kids' birthday, or if we just need a nice little break.''
He also explained that the key to their longevity and continued success is ''communication''.
He said: ''We just have a really good sense of communication. We all try to have each other's back, as well as we have really, really amazing wives that keep us grounded back home.''
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