Today's mentalfloss.com Brain Game Free-for-All Friday entry is trivia, but this question should warrant enough thought to qualify as a mental challenge. A hint? Okay... it's not Dolly, or Olivia, or Cher. Good luck!

What female vocalist remains the only recording artist
to score Top-10 singles on Billboard's Pop, Country, Dance,
Adult Contemporary, and R&B Charts?

Here is the ANSWER.

THE ANSWER:

SHEENA EASTON.

The hits "Morning Train," "Sugar Walls" and "We've Got Tonight" qualify her for the above. She also reached the Top-10 on Billboard charts with several other songs, including "Strut" and "The Lover In Me."

Thanks for playing! Join us in three days for a new Monday Math Square.