Amy Winehouse says she will perform next month at a concert honoring Nelson Mandela.

The concert will be held June 27 in London's Hyde Park to celebrate the former South African president's birthday. Mandela turns 90 on July 18. The lineup for the concert — which will benefit Mandela's AIDS charity — also includes Queen, Simple Minds, Leona Lewis and the Soweto Gospel Choir.

Former President Clinton and talk-show host Oprah Winfrey are among those expected to attend.