Slash says White 'was the one guy [he] wanted to work with'
Singer says he's 'honoured' to help the guitarist out
He takes to his Twitter page to tells fans the news
Guitarist says he is 'humbled' to have known him
Death comes just weeks after Slash's mother passed away
Ola Hudson passed away on Friday (June 5)
The guitarist has completed four songs for the album
Guns N' Roses man claims his party house is too small
Veteran rocker and Fergie are to feature on guitarist's solo project
Guns N' Roses man and his wife speak out against Prop 8