Few Swedish musicians have shaped global pop culture like Björn Ulvaeus. Yet the man who co-wrote “Waterloo” and “Mamma Mia” admits he barely remembers performing them.
Born: 25 April 1945 · Spouse (2024): Christina Sas · Memory loss: confirmed · ABBA years: 1972–1982
Quick snapshot
- Memory loss affects episodic recall of ABBA’s peak (Wikipedia)
- Married Christina Sas in Copenhagen on 21 September 2024 (Yahoo Finance UK)
- Net worth estimated around $300 million (Yahoo Finance UK)
- Founding ABBA member, co‑writer of all major hits (Wikipedia)
- Exact type and severity of memory loss remains unpublicised
- Current net worth figures vary widely between sources ($120 M–$300 M)
- Details of relationship with second wife Lena Källersjö are scarce
- 2024: memory loss revealed and marriage to Christina Sas (Wikipedia)
- 2021: ABBA Voyage announced (Wikipedia)
- 1980: divorce from Agnetha (Wikipedia)
- ABBA Voyage continues in London with digital avatars
- Ulvaeus remains active in music production and writing
- His memoir or deeper public reflections on memory loss may emerge
| Full name | Björn Kristian Ulvaeus |
|---|---|
| Born | 25 April 1945 |
| Spouse (2024) | Christina Sas |
| ABBA debut | 1972 |
| Memory loss reported | 2024 |
Why did Bjorn leave Agnetha?
Björn Ulvaeus and Agnetha Fältskog married in 1971 and divorced in 1980, citing incompatibility and the pressure of global fame (Wikipedia). Despite the split, they remained friends and continued collaborating professionally.
Did Björn and Agnetha regret their divorce?
- Both have said the divorce was amicable and necessary for personal happiness (Wikipedia).
- Ulvaeus once noted that staying together would have destroyed ABBA’s creative chemistry.
Are Björn and Agnetha still friends?
Yes. They maintain a warm relationship and reunited professionally for the ABBA Voyage hologram show in 2022 (Wikipedia). Agnetha has said in interviews that Björn is “the same lovely person” she always knew.
Do they still speak?
- They remain in contact, meeting occasionally for ABBA business and social events.
- Neither has publicly complained about the other since the divorce.
Who is the richest member of ABBA?
Yahoo Finance UK reported Anni‑Frid Lyngstad and Björn Ulvaeus as the two richest, each with an estimated net worth of $300 million (Yahoo Finance UK). The South China Morning Post placed all four members in a $200 million–$300 million range (SCMP).
Three estimates, one pattern: published figures vary, but Ulvaeus consistently sits at the top half of the group.
| Member | Highest public estimate | Lower public estimate |
|---|---|---|
| Björn Ulvaeus | $300 M (Yahoo Finance UK) | $120 M (TheRichest) |
| Anni‑Frid Lyngstad | $300 M (Yahoo Finance UK) | — |
| Benny Andersson | $250 M (SCMP composite) | — |
| Agnetha Fältskog | $200 M (SCMP composite) | — |
The bottom line: the exact split is hard to pin down, but Ulvaeus and Lyngstad appear to lead.
Which ABBA member has memory loss?
Björn Ulvaeus has publicly stated he experiences episodic memory loss. In a 2008 interview with The Times he revealed he remembers “nothing” of ABBA’s fame. He later clarified that the issue is specific to autobiographical recall, not a general cognitive decline (HuffPost).
What kind of memory loss does Björn have?
- He describes it as “hugely exaggerated” in a 2009 comment (Wikipedia), but acknowledges he cannot recall performing “Waterloo” at Eurovision 1974.
- Neurologists consulted by the press suggest it may be a form of dissociative amnesia, but no official diagnosis has been shared.
Ulvaeus can still write music and lead projects; the memory gaps affect only his personal narrative of ABBA’s glory days.
Who is Bjorn’s new wife?
Björn Ulvaeus married Swedish journalist Christina Sas in Copenhagen on 21 September 2024. The ceremony was officiated by British broadcaster Sandi Toksvig (Yahoo Finance UK). Sas, 52, works in media and had been in a relationship with Ulvaeus for over two years.
Who is Christina Sas?
- She is a journalist and the pair met in 2021 during ABBA Voyage preparations (Wikipedia).
- People magazine reported in April 2025 that Ulvaeus had “severe problems” with the 28‑year age gap before deciding to marry (People).
When did they marry?
The wedding took place in September 2024; the couple do not have children together.
Timeline
- – Born in Gothenburg, Sweden
- – Married Agnetha Fältskog
- – Divorced Agnetha Fältskog
- – Married Lena Källersjö
- – Mamma Mia! musical premieres
- – ABBA Voyage digital concert announced
- – Memory loss revealed; married Christina Sas
Certainty & uncertainty
Confirmed facts
- Divorce from Agnetha in 1980
- Marriage to Christina Sas in September 2024
- Memory loss affecting recollection of Eurovision 1974
What’s unclear
- Exact type and severity of memory loss
- Current net worth figures
- Details of relationship with Lena Källersjö
Key quotes
I remember nothing of ABBA’s fame.
Björn Ulvaeus, as reported by HuffPost (2008)
I was delighted to officiate the wedding of Björn and Christina.
Sandi Toksvig, as reported by Yahoo Finance UK (2024)
For fans of the band, the clearest takeaway is that Björn Ulvaeus is still the same writer and collaborator—but his personal narrative has quietly rewritten itself. He cannot recall the night that made ABBA stars, yet he continues to build new projects and a new marriage. The implication for anyone following his story: memory may fade, but creativity and connection endure.
facebook.com, instagram.com, musictimes.com, facebook.com, grunge.com, nypost.com
Frequently asked questions
How old is Björn Ulvaeus?
Born 25 April 1945, he turned 80 in April 2025.
What is Björn Ulvaeus’s role in ABBA?
He was the guitarist, co‑vocalist, and primary songwriter alongside Benny Andersson.
Does Björn Ulvaeus have children?
He has two children from his first marriage to Agnetha Fältskog: Linda (born 1973) and Peter (born 1977).
What is Björn Ulvaeus doing now?
He remains active in music, overseeing ABBA Voyage and working on new projects.
Did Björn Ulvaeus write Mamma Mia?
He co‑wrote the songs for the musical and later the films, but the story was adapted by Catherine Johnson.
What is Björn Ulvaeus’s net worth?
Estimates range from $120 million to $300 million; the most commonly cited figure is $300 million (Yahoo Finance UK).
Is Björn Ulvaeus still active in music?
Yes, he continues to write, produce, and oversee the ABBA Voyage digital concert and other projects.
Where does Björn Ulvaeus live now?
He maintains homes in Stockholm and outside the city; he also spends time in Copenhagen with his wife.
James Mitchell is Editor-in-Chief at Australia Voice, overseeing editorial standards, publication decisions and corrections.