This was recorded in 1980, a long time after my usual 50s and 60s choices, but it’s classic pop to me. Lovely stuff.
Like all their songs the track was written by Björn Ulvaeus and Benny Andersson, and was the first single released from the album Super Trouper. It topped the UK chart and reached No 8 in America.
They were the Beatles of the 1970s, in their musicianship, quality and prolificness.
I don’t think there was a Beatles of the 1980s. Michael Jackson? No thanks.