That second part was a little more anxiety-producing than the first.

Luckily, there was a simple solution for her nerves.

“My preparation for singing was bourbon.

Awardist Jessica Chastain in The Eyes of Tammy Faye

Jessica Chastain joins EW’s ‘The Awardist’ podcast to talk about ‘The Eyes of Tammy Faye.'.Sheryl Nieds/Searchlight Pictures

I’m not even gonna lie,” Chastain says on EW’sThe Awardistpodcast.

“I was so scared.”

Tammy was someone who “ministered through song,” Chastain says.

“On that first note, she’s calling up to Jesus.

For a shy, reserved person, it’s a nightmare.

But I had to do it.”

“We have 31 songs we’re singing,” Chastain says.

“We did six weeks of rehearsals in New York.

No word yet on how much bourbon was required to calm her nerves for that.

The Eyes of Tammy Fayeis now playing in theaters.

Listen to the full interview onEW’sThe Awardistpodcastbelow or available wherever you listen to podcasts.