If you’re a rock drummer who grew up on alternative music, chances are Jimmy Chamberlin will be on your list of music idols. The 55-year-old co-founder of the Pumpkins changed the way that drummers approach rock music, given his technical playing, melodic instincts, keen ear, and background in jazz. We checked in with Jimmy on the Pumpkins’ tour to chat about his return to the lineup after his 2009 departure, and what it’s like playing in a rhythm section with Jack Bates.Does it feel good to be back on tour? It feels good and it feels like we never left. This has been such a huge chunk of my life that it really never went away. This configuration of the band is really special, and the addition of Jack has been a natural fit for all of us. The way he feels the bass and his pocket is perfect for this music. This has easily been the best the band has ever sounded, and a lot of that is due to his ability to recreate those parts. Having been away from the band for six years, how did i