Conversation so far:
When was Robin Gibb's death?
He died on 20 May 2012.
When did the Bee Gees return to performing?
Barry and Robin performed on the BBC's Strictly Come Dancing on 31 October 2009.
What happened to the Bee Gees in 2009?
Barry and Robin appeared on ABC-TV's Dancing with the Stars on 17 November 2009.
What happened to the Bee Gees in 2010?
On 15 March 2010, Barry and Robin inducted the Swedish group ABBA into the Rock and Roll Hall of Fame.
What happened to the Bee Gees in 2011?
On 20 November 2011 it was announced that Robin Gibb, at 61 years old, had been diagnosed with liver cancer.
What happened to the Bee Gees in 2012?
On 14 April 2012, it was reported that Robin had contracted pneumonia.
What aspect did you find interesting about the Bee Gees article?
Although he came out of his coma on 20 April 2012, his condition deteriorated rapidly.

Question: When was the last time they performed?
Self-contained rewrite: When was the last time the Bee Gees performed?