Conversation so far:
what is Requiem for Indifferent and Retrospect in regard to Epica?
Requiem for the Indifferent is the fifth studio album by Dutch symphonic metal band Epica.
what songs were on Requiem for the Indifferent?
On 3 February 2012, the band released on iTunes the single Storm the Sorrow“.
what year did requiem for the indifferent come out?
It was released in April 2012
was requiem for the indifferent popular?
General response to Requiem for the Indifferent was positive

Question: how did they celebrate?
Self-contained rewrite: how did epica celebrate?