The song, which cloned the stars' voices, is removed from streaming platforms after a copyright claim.
He is the second member of the popular band to enlist in the army, posting a goodbye message online.
The Oscar winner was admitted to hospital a week ago following a "medical complication".
A huge set has been built for Wizard of Oz film spin-off Wicked, which stars Ariana Grande.
The former star of The OC will appear in the relaunched Australian soap later this year.
Ukraine's Kalush Orchestra, the UK's Sam Ryder and Liverpool's own Sonia will perform, the BBC says.
Ben Coyles was celebrating his birthday in fancy dress when he bumped into the Lord of the Rings actor.
Boris Eldagsen said he used the image to test the competition and to create an "open discussion".
The track, which has not been approved by either musician, has been viewed eight million times on TikTok.
New York's longest running musical closed on Sunday after 35 years at the Majestic Theatre.