J.K. Rowling announced more "Harry Potter" summer fun. Rowling released a new story on pottermore.com, the "Harry Potter" website and made it available to "The Today Show."

J.K. Rowling unveiled a new character Celestina Warbeck She wasn't in any of the seven Harry Potter books, but Rowling magically thrust her into our collective unconscious.

In a statement, Rowling explained "Celestina Warbeck is one of my favourite 'off-stage' characters in the 'Harry Potter' series. I stole her first name from a friend with whom I worked, years ago, at Amnesty International's Headquarters in London; 'Celestina' was simply begging to be scooped up and attached to a glamorous witch."

In June, J.K. Rowling put out a new story, in the form of a gossip column, that imagined Harry Potter as a 34-year-old dad who was on a Quidditch World Cup outing.  Two weeks ago, Rowling had Dumbledore write a letter to Cassidy Stay, who lost her family in a tragic shooting.

Rowling's new short story about the singing sorceress Celestina Warbeck. Warbeck is a minor "Harry Potter" character who was inspired by Welsh singer Shirley Bassey.

J.K. Rowling didn't just fill in the details of Wizarding World singer Celestina Warbeck's life, but dropped a new single.

Warbeck is Molly Weasley, Ron Weasley's mom's favorite jazz singer. Rowling released a biography about the popular witch singer today, August 18, which happens to be Celestina's birthday. Celestina Warbeck is the house act at The Wizarding World of Harry Potter's Diagon Alley expansion.

According to Pottermore.com "Internationally-acclaimed singing sensation Celestina Warbeck (sometimes known as 'the Singing Sorceress') hails from Wales. Her father, a minor functionary in the Muggle Liaison Office, met her Muggle mother (a failed actress) when the latter was attacked by a Lethifold disguised as a stage curtain..."

Celestina is best known for her songs "You Charmed the Heart Right Out of Me," "A Cauldron Full of Hot, Strong Love." Her biggest album in the 20th century was "You Stole My Cauldron but You Can't Have My Heart." You can listen to "You Stole My Cauldron but You Can't Have My Heart" on Pottermore.com.

Rowling wrote the title but not the lyrics to the song.