Broadway singer and actress Liz Callaway has performed a half-dozen times in Provincetown but returns Aug. 30 and 31 to a different venue — and with a new honor as a 2024 Grammy Award nominee. That achievement came in an unexpected category: Best Traditional Pop Vocal Album.

“My son sent me a Wikipedia page of all the people who had won or been nominated in that category over the years, and it was a ‘pinch-me’ moment,” she says. “To be nominated in the same category as Bruce Springsteen? That was not on my bingo card.”

The news gave her a new perspective on her long career: “I’ve always felt like a big part of the theater community, but for the first time in my life I feel like a part of the music community,” says Callaway, 63. “I’d never thought of a Grammy for myself, unless it was maybe a show album. It’s a lesson that you never know what you can accomplish, especially in the second half of your life.”

The nomination came for To Steve With Love: Liz Callaway Celebrates Sondheim, a live recording of her 2022 tribute to the late composer Stephen Sondheim at the nightclub 54 Below in New York. She produced it herself. It’s fitting that, of her eight solo albums, it’s the one to get Grammy attention because of how important Sondheim has been to her career.

In a letter she treasures, Sondheim called her voice “crystalline.” On her album, Callaway calls Sondheim “a friend, a teacher, and a man who changed my life.”

The first musical she ever saw, at age 9 or 10, was Sondheim’s Company. Her first Broadway role in 1981 was in Merrily We Roll Along. She has performed in multiple live concerts honoring him, appeared with Sondheim on TV’s Inside the Actors Studio, and was part of a star-studded concert version of Follies at Lincoln Center. Callaway’s regional theater credits include Sondheim’s Sunday in the Park With George.

She’s sure that Sondheim songs — and most likely her rapid-fire showstopper “Another Hundred Lyrics,” a parody poking gentle fun at his tongue-twisters — will be included in these first-ever performances at the Post Office Café and Cabaret. “A Liz Callaway show needs Sondheim in it,” she says with a laugh.

Past visits to Provincetown, her “happy place,” have involved concerts at other local venues, sometimes solo and other times with her sister and frequent co-star Anne Hampton Callaway. But the Post Office is new for her. She’ll be accompanied by John McDaniel, a Grammy- and Emmy-winning musician who’s hosting the venue’s Broadway series. The two have teamed up multiple times elsewhere in recent years (“He can play anything!” she says) and performed for benefits as well as on a cruise ship.

“I have long been a fan of Liz’s gorgeous, crystal-clear voice and evocative storytelling,” says McDaniel.

Beyond Sondheim, the show will likely include other composers who Callaway has championed over the years and with ’60s pop and stories.

Callaway’s longest Broadway stage role was five years as Grizabella in Cats. She originated the role of Ellen in Miss Saigon and was Tony-nominated for Baby. Offstage, Callaway has provided singing voices for female characters in animated films: the lead in Anastasia, Odette in The Swan Princess, Jasmine in the Aladdin franchise’s The Return of Jafar and Aladdin and the King of Thieves, and the adult version of Kiara in The Lion King II: Simba’s Pride.

In a 2019 Provincetown concert, Callaway called that offstage voice work her “secret career,” but she’s come to realize the impact of that work. “People would come up to me after concerts and burst into tears, saying, ‘You were the soundtrack of my childhood,’ ” she says. “It introduced me to a new generation, and that’s really important to me. I want all generations to know my music, and sometimes Anastasia is their introduction.”

A new generation has also embraced Sondheim’s Merrily We Roll Along. Her 1981 Broadway debut in that musical infamously closed after just 16 performances. But the 2023 revival was a hot ticket and won four Tonys. Callaway and multiple 1981 castmates attended two performances and celebrated the revival’s success.

She’s thrilled by the recent attention to Sondheim’s work, wanting up-and-coming theater students to learn his oeuvre. She’s had a career-long discovery of Sondheim’s music, noting that he wrote many songs for older female characters that she now feels comfortable performing.

“And I can still sing songs I sang when I was younger and have a fresh interpretation of them because of my life experience,” she says. “His music is just a gift to singers.”

Another Hundred Lyrics

The event: Liz Callaway, with accompanist John McDaniel
The time: Friday, Aug. 30 and Saturday, Aug. 31, 6:30 p.m.
The place: Post Office Café and Cabaret, 303 Commercial St., Provincetown
The cost: $65 and $90 at postofficecafe.net

Editor’s note: An earlier version of this article, published in print on Aug. 29, incorrectly reported that Liz Callaway and castmates from the 1981 production of Merrily We Roll Along had attended the Tony Award ceremony for the 2023 revival; they attended performances of the revival.