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
The pop star’s fifth album might not come out until next year according to Elton John
Warwick says she regarded Black as her 'nemesis'
Singer filled Instagram with video from band's gig last night
Singer gives an update on the progress of her fourth studio LP
The singer reveals her ordeal with Dr Luke is "devastating to witness"