A for Agnetha: the former ABBA star has "fantasised" about singing with Frida Lyngstad again.
More than 30 years since the Swedish superstars split up, with their records continuing to sell millions, Fältskog, 63, has revealed she and Lyngstad got together in Majorca over the European summer and entertained the idea of blending their voices once more.
With Fältskog about to release her first album of new material in 25 years, A, on May 13, with a strong promotional push from Universal Records, speculation is again mounting that the four members might yet be tempted join creative forces in some configuration.
Ovation: Frida Lyngstad, left, and Agnetha Faltskog on stage in Sydney in 1977.
AdvertisementOne British bookmaker was offering 16-1 odds on the four members at least appearing on stage together for Eurovision, if not to sing.
Such a notion may be scuttled by Fältskog's planned 10-day UK promotional trip this month. Fältskog will make a special guest appearance at gay nightclub Heaven in London on May 4.
A for Agnetha: an image from the photo shoot at Confidencen, a rococo theatre in Sweden, for the former ABBA star's new album.
Frida Lyngstad, 67, said in a 2004 interview that the "ship has sailed" on her performing career, but in 2010 she recorded a cover version of the Cat Stevens song Morning Has Broken.
Asked about the possibility of a reunion by a German magazine last month, Fältskog said: "Maybe a charity concert? I would not say 'no' right away."
Looking forward: Faltskog is about to embark on a 10-day tour of the UK.
He told the BBC in April: "(A reunion) is the inevitable question. No we wouldn't (get back together). There would have to be a very strong motivation."
Fältskog however has told the May issue of the UK gay magazine Attitude that she would entertain the idea of singing with Frida Lyngstad again.
"We have talked about it," Fältskog told the magazine. "Fantasised like that. But we have done so much, both of us now. I met Frida during the summer, in Majorca, and we sat, and ... well, you easily get very nostalgic...
"And I am sure that Frida and I, we could still do it, but now I have this CD to think of."
Fältskog's album is produced by Grammy-nominated songwriter and producer Jorgen Elofsson, who has produced Britney Spears, Kelly Clarkson, Celine Dion and Westlife.
Fältskog wrote one song for the album, I Keep Them on the Floor Beside My Bed. The Times of London has given the album four stars. There is just one dance number on the album, the 70s-era disco song Dance Your Pain Away, and most of the album showcases Fältskog's strengths as a torch-song singer with big choruses and lush instrumentation.
Fältskog told Attitude magazine she and Lyngstad confided in each other when their respective marriages to band members Ulvaeus and Andersson fell apart.
"But you know we have never been the kind of girls who see each other every day. But I think we have a very close friendship now. More today than back then probably ... I think now we have got older we understand each other more."
An ABBA Museum is also due to open in Stockholm this month.