'Act I' of the three-part opera came out in November last year
Priscilla Presley, Riley Keough and Sarah Ferguson, Duchess of York, also commemorated the late singer
It comes ahead of the second part of the Pumpkins’ new album ‘ATUM’
The first 11 songs of the three-part opera are available to stream now
The frontman has been updating fans on his condition via social media
The band are releasing the first instalment of three-part "rock opera" album, 'ATUM', next week
Madison Square Garden, October 19: The joint 'Spirits On Fire' arena tour proves rock's staying power in NYC
"It's just sitting there..."
“I think the 21st century of the music business should be a legacy of finding artists young, fostering them and making sure that they go on to create great music for generations to come”
"There’s a lot of people who believe less is more these days – I’m on the opposite side," Billy Corgan told NME