Musical theater composers Marcy Heisler and Zina Goldrich. (Matt Murphy)

The musical theater writing duo of Zina Goldrich and Marcy Heisler would like to clear up a common misconception about their most popular song: “Taylor the Latte Boy” is not an anthem of unrequited love.

“It’s a song about yearning, whether it’s requited or unrequited,” Goldrich said. “It’s about that moment when you have to decide, ‘Am I going to tell this person that I like them?’ We hope everyone decides to take that first step.”

The song — about a girl infatuated with a barista who can “bring [her] java and bring [her] joy” — went as viral as songs could go in 1999, after Kristin Chenoweth sang it on “The Rosie O’Donnell Show.” The Tony winner still performs the number at nearly all her concerts. Audiences revolt when she doesn’t.

Goldrich and Heisler — or Marcy and Zina, as they are more commonly known — will sing “Taylor,” among other songs, Saturday at Signature Theatre’s Sizzlin’ Summer Nights cabaret series. They’ve long since written many more songs for film, television and stage (their most successful stage show is “Junie B. Jones: The Musical,” based on the children’s book), and Heisler and Goldrich are hoping they’ll soon have their Cinderella moment at the Broadway ball.

“Ever After,” their musical adaptation of a 1998 Drew Barrymore movie, opened at New Jersey’s Paper Mill Playhouse in the spring, with Howard County native Margo Seibert as the would-be princess. Heisler couldn’t share much about the musical’s future, except to say, “There is stuff afoot.” They’re also optimistic about their latest project, a musical called “Hollywood Romance,” which is in the workshop phase and has names such as Will Swenson and Marc Kudisch attached to it.

(L to R) Chaz Pofahl as Jim Bakker and Kirsten Wyatt as Tammy Faye Bakker in “Born for This: The BeBe Winans Story.” (Greg Mooney/Alliance Theatre)

“We are coming to you in D.C. with all of our stuff in the crock pot, but that is the most fun stage,” said Heisler, who is the lyric-writing half of the team.

Songs from “Ever After” and “Hollywood Romance” will make the cabaret set, as will other standalone tunes that are not quite as popular as “Taylor” but that still have plenty of YouTube covers. One, “Baltimore,” was inspired by Heisler’s former ne’er-do-well boyfriend from Charm City. Audra McDonald frequently sings it, and many other Tony Award-caliber stars keep Marcy and Zina songs in their concert rotations. It’s probably fair to say they are the most accomplished musical theater songwriters who have not yet had a Broadway hit.

If the push to get more shows by women onstage (for example, Washington’s Women’s Voices Theater Festival) helps them, great. But having been in the business for so long, Goldrich is a little cynical.

“I do think there is more awareness of women writers now, and I think that’s a really great thing,” she said. “But I also don’t like the qualifier ‘woman composer.’ I’m a composer. And we are a woman-woman musical theater writing team. We are so happy where we are in a time where that is more normal. You just have to work that much harder, and hope that the work does what it needs to do.”

Heisler added: “Just be a woman and keep writing. That’s the best way to bring the work to light.”

Make way for Tammy Faye

Costume designer William Ivey Long says the new musical “Born for This,” about gospel singers BeBe and CeCe Winans’s relationship with televangelists Jim and Tammy Faye Bakker, is unlike any show he’s ever done.

“Never before have I done a show where I felt like I know the characters,” the six-time Tony winner said.

Long is based in New York but grew up in the South, just 12 miles from Fort Mill, S.C., where Jim and Tammy Faye built their Heritage USA theme park and Praise the Lord (“The PTL Club”) broadcasting compound.

“It was the local oddity,” said Long, who was in graduate school during PTL's heyday in the late 1970s and early '80s, the period depicted in “Born for This,” which runs through Aug. 28 at Arena Stage. (BeBe Winans wrote the show, and several family members are in the cast.) On trips home, he heard many stories about the Bakkers, such as the one about a neighbor’s cousin who worked at the local Belk department store and was a personal shopper for Tammy Faye.

“She would buy a suit,” Long said, “and bring it back a few days later and say something like, ‘I’m sorry, this just didn’t work out.’ But there would be makeup all over the collar.”

Tammy Faye was just as famous for her overdone rouge and eyelashes as her husband was for the financial scandal that ultimately brought down PTL. Long wanted to make sure that she was represented onstage as a person, not a caricature, and his strategy was to go vintage shopping for the sort of brightly colored dresses and suits that Tammy Faye would have found at Belk.

“They were just real clothes, but now we look back on them and think of them as costumes,” Long said. “It was very important for me that we find similar things online and in vintage stores. I wanted to temper the character as much as possible. That’s why I said, ‘No, these are going to be real clothes.’ ”

Long hopes his efforts help Kirsten Wyatt, who is playing Tammy Faye in “Born for This,” remember that she’s playing a real woman who sincerely believed her wardrobe was not over the top, but right on trend.

“She loved dressing up, and she felt it was her responsibility to look good,” Long said. “We didn’t copy any of these clothes. They are totally in the period and totally in the spirit.”

Smith Prize to D.C. writer

Washington-based playwright Jennifer Barclay has won the 2016 Smith Prize for Political Theater for her play-in-progress “Ripe Frenzy.” The award is administered by the National New Play Network, which has its headquarters at Woolly Mammoth Theatre.

The award is notable not only for the money that comes with it — $10,000 split between the playwright and theaters that invest in its development — but also because other Smith Prize projects have gone on to such acclaim. “Ironbound,” the 2013 winner by Martyna Majok, had its world premiere at Round House Theatre in the fall and went on to a successful New York run. It also won the Helen Hayes Award for best new play.

No theaters have been announced to stage “Ripe Frenzy,” a play about media reactions to mass shootings, but given that Barclay teaches playwriting at the University of Maryland, local stagings are certainly possible.

Correction: An earlier version of this story misstated actress Sarah Jessica Parker’s involvement in the musical “Hollywood Romance.” Parker’s name has not been attached to the musical. She is scheduled to act in a film being written by the musical’s writers, Jen Crittenden and Gabrielle Allan.