Gaga confirms NME’s news that her comeback starts this week
Gaga has been teasing Mark Ronson and Tame Impala collaboration ‘Perfect Illusion’
Gaga’s new single is produced by Mark Ronson and Tame Impala’s Kevin Parker
The book will be published in November
The track was originally intended to appear on Gaga's 'Artpop' album in 2012
Gaga also covered songs by Neil Young, Edith Piaf and Charlie Chaplin
Forty nine people lost their lives in the shooting earlier this month
Pair discussed mental health and tragedy during livestreamed chat
The pair sat down together on Facebook Live yesterday (June 27)
The singer has been spotted around the Worthy Farm site