The singer had shared her breast cancer diagnosis last summer
Previously announced artists include Lily Allen, Scissor Sisters, Jessie J, Five and more
“Sending love to anyone feeling this way too right now
Others on the bill include Scissor Sisters, Nile Rodgers & CHIC, The Streets, Bastille, Basement Jaxx, and more
An eclectic mix of rising stars and stalwarts will join Jools, Ronnie Wood and Imelda May to ring in the New Year
“It’s like nothing we’ve ever seen before"
Jessie J, Five, JLS, Alexandra Burke, Heather Small, Tulisa, The Wanted 2.0, Liberty X and many more are also on the bill
“Life is about standing in the storm but holding up your umbrella and just keep moving forward," she told the crowd
Amid her health battle, she said the "deep, hopeful loving feeling" distilled in the song resonated with her more now than ever
She has also cancelled her North American tour
JJ