It was Kathryn Hahn all along?

Not only has the scene-stealing actress been the consistent highlight of WandaVision as Wanda (Elizabeth Olsen) and Vision’s (Paul Bettany) nosy neighbor Agnes, Hahn has been the secret weapon….behind the extremely catchy new theme song “Agatha All Along.” That’s right, those are Hahn’s golden pipes singing the Addams Family-style tune penned by songwriting duo Robert Lopez and Kristen Anderson-Lopez.

Which adds another wonderful layer to the title “Agatha All Along.”.

Have you found it impossible getting “Agatha All Along” out of your head since you first heard the revelatory theme song during the latest WandaVision episode, “Breaking the Fourth Wall”.

Well, that’s thanks to the talents of Lopez and Anderson-Lopez, who penned the earworm, alongside all the other theme songs that played during WandVision‘s run.

And while the songwriting duo have lent their own voices to the songs, along with singers like Kathleen Hanna and unnamed choruses, Lopez and Anderson-Lopez revealed in an interview with Marvel.com that the singer behind “Agatha All Along” was none other than Hahn herself:.

Anderson-Lopez: [Agatha] gets her own theme song that is in, sort of, The Munsters, Addams Family, kind of, witchy, ghoulish feeling.

Lopez is the first to remind readers that Hahn is a “musical theater star,” whose musical talents are currently being showcased on Apple TV+’s Central Park,” on which Anderson-Lopez’s sister Kate Anderson works as composer.

The seventh episode of Marvel Studios' #WandaVision is now streaming on #DisneyPlus.