Cast your mind back a few years, and you’ll find a somewhat different Billy Corgan than the one we encounter in 2019. Would you, for example, have put money on there being a Smashing Pumpkins reunion in which the burned bridges between he and guitarist James Iha and drummer Jimmy Chamberlin were not only repaired, but actually visibly strong? Or that their comeback album would embolden their legacy while also pushing creatively forward? Or that, rather than the curmudgeonly, laff-free man who was once (rather unfairly) papped having what appears to be the least enjoyable time of his life on a fairground train ride, Billy seems to be genuinely enjoying himself? You would not. However, as weird as that giant effigy of himself that was carried ceremonially through Wembley Arena on the ba...