Watch Yungblud break down in tears singing 'Changes' on US tour before Black Sabbath's Geezer Butler hails "best show I've seen in years"
The singer first performed the Sabbath song at the poignant 'Back To The Beginning' show last month
Robert Plant explains why he declined invite to Ozzy Osbourne and Black Sabbath's 'Back To The Beginning' gig
The former Led Zeppelin frontman referred to the landmark farewell show as "doing the football stadium with some old mates"