Donna Summer, Queen of Disco, dead at 63

Donna Summer, the woman affectionately known as the Queen of Disco, died in Florida this morning after a battle with cancer. She was 63.

According to a TMZ report, sources close to Summer have stated the singer was trying to keep a tight lip on the extent of her illness.

"We spoke to someone who was with Summer a couple of weeks ago ... who says she didn't seem too bad," shares TMZ. "In fact, we're told she was focused on trying to finish up an album she had been working on."

The five-time Grammy award winner rose to superstardom in the '70s with hits such as "Hot Stuff," "Last Dance" and "Bad Girls." Her success continued well into the '80s with "This Time I Know It's for Real," and "She Works Hard for the Money."

Summer, along with producer Giorgio Moroder, were accredited with defining the '70s dance music era, influencing a slew of acts including David Bowie and Duran Duran.

Summer married Bruce Sudano, the Brooklyn Dreams singer, back in the '80s. They have two daughters.