Abba star performs at Children in Need Rocks concert
13 November 2013 Last updated at 10:35 GMT
Former Abba singer Agnetha Faltskog has performed in front of a live audience for the first time in 25 years, at the BBC's Children in Need Rocks concert.
She joined organiser Gary Barlow on stage to sing songs from her new album.
Highlights from the two Children in Need Rocks concerts will be shown on BBC One on Thursday 14th November at 8pm.