Conversation so far:
What happened with the band Good Charlotte in 2009?
On December 3, 2008 Kerrang! magazine announced that Good Charlotte would be releasing its fifth studio album, Cardiology in 2009.
How did the album Cardiology by Good Charlotte do?
It debuted at number 31 on the Billboard 200; it charted within the top 30 on five additional Billboard charts.
How many units did the album Cardiology by Good Charlotte sell?
As of September 2011, the album has sold over 52,000 copies in the US.
Did the album Cardiology by Good Charlotte win any awards?

Question: What was Cardiology?
Self-contained rewrite: What was Cardiology by Good Charlotte?