“Josh Safran, the creator of the show, and I had a conversation on the phone, and he explained it to me,” she recalled. “Once he explained what his vision for it was, I understood it a little bit better. That being said, after I got the job, I realized that I didn’t fully understand.”

Unlike the former NBC series Smash, which was executive produced by Josh, the Soundtrack cast lip-syncs popular songs instead of singing them — a decision that initially confused Callie.