In 2006, Corgan and Chamberlin reconvened to record a new Smashing Pumpkins album, "Zeitgeist". After touring throughout 2007 and 2008 with a lineup including new guitarist Jeff Schroeder, Chamberlin left the band in early 2009. Later that year, Corgan began a new recording series with a rotating lineup of musicians entitled "Teargarden by Kaleidyscope", which encompassed the release of stand-alone singles, compilation EP releases, and two full albums that also fell under the project's scope—"Oceania" in 2012 and "Monuments to an Elegy" in 2014. Chamberlin and Iha officially rejoined the band in February 2018. The reunited lineup released the album "" in November 2018 and "Cyr" in November 2020.