The personal relationships between the original members of Smashing Pumpkins have been publicly strained often enough that it's no surprise whenever one of them elects not to work with the others.
An under the weather Billy Corgan has revealed that Smashing Pumpkins are currently at work in the studio with uber producer Rick Rubin in a post to Instagram.
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Billy Corgan is selling off more than 150 pieces of musical equipment used over the years with Smashing Pumpkins via Reverb, the online music gear marketplace.