By Dana Rose Falcone
Updated June 12, 2015 at 05:28 PM EDT
Patrick Harbron/NBC

Smash fans’ dreams came true earlier this week when the cast reunited for a one-night only concert performance of the show’s musical-within-the-musical, Bombshell. And the cast loved it, too.

“It was everything I’d hoped it to be,” Smash star Katharine McPhee told EW.

The musical, which was also at the center of the NBC show, sets Marilyn Monroe’s life to music and sold out the Minskoff Theatre in New York on Monday. When Smash lovers learned producers Craig Zadan and Neil Meron would bring Bombshell to life, they supported the effort by raising over $600,000 on Kickstarter, and buying up tickets within an hour back in April.

But knowing she only had one shot to give diehard fans the show they expected slightly overwhelmed McPhee. “It was a lot of pressure because it’s one night,” McPhee said. “But I’ve had a lot of experience with situations under pressure, so this one felt a lot easier.”

Smash ran for two seasons between 2012 and 2013, and since its cancelation, fans wondered if Bombshell would make its way to the Broadway stage. And when it did, audience members had nothing but adoration for the performance. “There was just so much love,” McPhee said. “Everyone coming in the audience had a lot of admiration for the show and the cast members.”

So, how does McPhee feel about Bombshell doing a run on Broadway? “I was just thinking, this would make a great Broadway show,” she said. “You never know.”