"We were known for having the best shows. As for energy, remember Will's the guy who played Muhammad Ali.
"If anything I have to contain his energy so he doesn't burn out in the first three songs and that's going to be hard."
The duo are reuniting for Livewire Festival in Blackpool for what will be their only UK appearance of the year.
DJ Jazzy Jeff and Will Smith, or the Fresh Prince of Bel Air, met in the 1980s and won a Grammy for their single Parents Just Don't Understand.
