Conversation so far:
When was Robin's death?
20 May 2012.
When did they return to performing?
Barry and Robin performed on the BBC's Strictly Come Dancing on 31 October 2009.
What happened in 2009?
appeared on ABC-TV's Dancing with the Stars on 17 November 2009.
What happened in 2010?
On 26 May 2010, the two made a surprise appearance on the ninth-season finale of American Idol.
What happened in 2011?
On 20 November 2011 it was announced that Robin Gibb, at 61 years old, had been diagnosed with liver cancer.

Question: What happened in 2012?
Self-contained rewrite: What happened in 2012 for the Bee Gees?