The Sweet Meaning Behind Carrie Underwood's New Single, 'What I Never Knew I Always Wanted'

— -- Country star and new mom Carrie Underwood said her emotional new ballad, “What I Never Knew I Always Wanted,” sums up her feelings about the two men in her life, her husband Mike Fisher and their infant son Isaiah.

“I never really pictured myself getting married and I guess I never really -- I always assumed a family was in the future, but I wasn’t, you know, ‘Oh my gosh, I can’t wait to have kids,’ and I kind of took a more laid-back approach to the whole thing,” Underwood told ABC’s Robin Roberts. “Now I couldn’t imagine my life without either one of them.”

The 32-year-old singer talks about working on her new single, her new album “Storyteller” and motherhood with Roberts for the upcoming ABC News special, “Countdown to the CMA Awards: Country’s Greatest Crossover Hits with Robin Roberts."

In the song, “What I Never Knew I Always Wanted,” Underwood sings about Fisher, a professional hockey player, with the lyrics, "Thought I was happy on my own / ’Til you came and proved me wrong." Then she moves on to 8-month-old Isaiah, singing, "You’re stealing every bit of my heart with your daddy’s eyes / What a sweet surprise."

Her sweet tribute appears as the last track of the singer’s fifth studio album, which was released today.

“I am really excited because we have been working on—I mean, I have been listening to some of these songs for a couple of years now, and they still hold up, which, that makes me feel really good,” Underwood said of “Storyteller.”