ABBA

Swedish pop group, formed 1972 (4)

Solution has appeared in 3 crosswords (1 across and 2 down):

• Quick crossword No 16,514 — 2023-04-10 23:00:32
  21A: Palindromic supergroup (4)
• Quick crossword No 16,279 — 2022-07-10 23:00:47
  5D: Agnetha, Björn, Benny and Anni-Frid as a group (4)
• Quick crossword No 16,010 — 2021-08-29 23:00:18
  2D: Swedish pop group, formed 1972 (4)