The man who played psychopath Dandy in the fourth series of 'American Horror Story' has given his thoughts on Lady GaGa's guest appearance in this year's chapter of the blood-spattered anthology.

Finn Wittrock at an American Horror Story: Freak Show screeningFinn Wittrock's portrayal of Dandy was a highlight of 'Freak Show'

Speaking to Variety, actor Finn Wittrock recalled his reaction when he first heard the 'Bad Romance' singer would be guest starring in 'American Horror Story: Hotel' later this year. 

"I was like, 'Perfect!' Ryan (Murphy) always has a way of outdoing himself. It's hard to keep surprising people when each season is so surprising. 

"He very wisely makes a big awesome casting choice to get people intrigued. This was the epitome of that."

Wittrock added: "The thing about (Lady Gaga), with her great theatricality and the gratuity of her own image, it actually makes a lot of sense for her to be on this show. 

"The show is heightened and gothic and that's sort of what she is. It's a good omen for the way the season will turn out."

Lady Gaga leaving her hotelLady Gaga will be checking into the horror hotel

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Wittrock proved one of 'Freak Show's most popular cast members with his terrifying portrayal of serial killer Dandy. But what was it like working alongside series favourite Jessica Lange in her final season?

"I didn't get to do a whole lot with her. We were kind of in separate universes. The little scene we had in the last episode I think was the last scene she did at all. So it was a very special thing. She was there, and the whole crew was there and said goodbye to her. It was very bittersweet.

"She's such a classic. She's a real pro. I think she was excited but also sad to say goodbye. It was epic."

'American Horror Story: Hotel' will premiere in October. Many familiar 'AHS' faces are set to return, including Kathy Bates, Sarah Paulson and Evan Peters.

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