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.

Question: What happened in 2011?
Self-contained rewrite: What happened to the Bee Gees in 2011?