Mark Guglielmo met the frontman in Atlanta this week
Chris Pitman also called the classic-era reunion a 'nostalgia tour'
The two rock bands will perform together in April
Former guitarist clarifies his role saying: "There's so much misinformation"
Classic line-up set to reunite this year
Guitarist DJ Ashba left the Guns N' Roses lineup in July 2015
The reunited rock group will head to Mexico between Coachella weekends
Aerosmith frontman said he had urged Axl Rose to reform band after meeting him in a nightclub
Tommy Stinson says reunion will be "healing" for the band
Band are set to reunite this summer for a series of live dates, including a Coachella Festival headline slot