solos
solos
solos
solos
solos
SOLOS
solos
solos
solos
solos
A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward. In the context of songs sung alone, a palindrome could be a song title or lyrics that are the same when sung in reverse. One example of a palindrome for songs sung alone could be "Able was I ere I saw Elba," which reads the same forwards and backwards.
SOS by ABBA
You cannot make a palindrome with 3 different digits. You can only do that if you have a set of paired digits, and at most one single digit.