The New York Times reported:
At least two members of the Swedish pop group Abba will be making an appearance in London as part of a tribute concert, BBC News reported.
It doesn't take a brain surgeon to guess which two - namely, the two that have continued to work together since the group split up, Benny Andersson and Bjorn Ulvaeus.
Although Frida has worked with the two at least once - check the backing singers in this video of "One Night in Bangkok."
Note: previously shared in an old FriendFeed account.