“SOS” by ABBA, which is widely recognized as the only hit song where both the title and the artist’s name are palindromes.
This double palindrome makes it unique in music history.
{A palindrome (/ˈpæl.ɪn.droʊm/) is a term given to describe a word, a number, a phrase, or other sequence of symbols that read the same backwards as they read forwards.}
The word palindrome was introduced by English poet and writer Henry Peacham in 1638.[1] The concept of a palindrome can be dated to the 3rd-century BC, although no examples survive. The earliest known examples are the 1st-century AD Latin acrosticword square, the Sator Square (which contains both word and sentence palindromes), and the 4th-century Greek Byzantine sentence palindrome nipson anomemata me monan opsin.[2][3]
