Lady Gaga 'Covers John Lennon'

Lady Gaga gave a special performance at the Human Rights Campaign official dinner on Saturday night - with support from President Obama.

The kooky singer sang John Lennon's 'Imagine' on the eve of the gay rights march in Washington D.C - in which she joined protesters on Sunday (October 11) as they marched through the streets, before taking part in a demonstration outside the White House.

"Opening" for Lady Gaga prior to her performance, Barack Obama told audience members how he planned to allow homosexuals into the U.S military, before he joked: "I'm honored to be opening for Lady Gaga tonight."