Conversation so far:
When was reformation released?
On June 21, 2005.
When was their album released?
On June 21, 2005.
What happened with their reformation?
there was question as to whether other former members of the band would participate.
Did they want to get back together?
In April 2007 Iha and Auf der Maur separately confirmed that they were not taking part in the reunion.
Why didn't they want to join the reunion?
Chamberlin would later state that Iha and Wretzky "didn't want to be a part of" the reunion.

Question: When was the first performance?
Self-contained rewrite: When was the The Smashing Pumpkins's first performance?