The 38-year-old country singer andAmerican Idolalum and his wifeKatieare expecting their first child together, he confirms exclusively to PEOPLE.

The moniker holds special significance for Gracin, who explains it was important the name meant something to his family. “Luka represents my father’s Croatian heritage and Italian blood,” he says. “Prayers were truly answered!”

Brooke Lott

Josh Gracin

Josh Gracin (L) and wife Katie.Brooke Lott

Josh Gracin

Josh Gracin (R) and wife Katie.Brooke Lott

Josh Gracin

The singer is also dad to four children from a previous relationship: daughtersIsabella Sophia, 10,Gabriella Ann, 12, and Briana Marie, 17, plus son Landon Joshua, 13.

Gracin and graphic designer Katie, 28,tied the knot in Nashville, Tennessee,in May 2017 after meeting while she worked her way through college at the Music City bar Tin Roof.

Josh Gracin (L) and wife Kati.

Josh Gracin

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The couple celebrated their two-year wedding anniversary in May, with Katie sharing asweet slideshow of photosto commemorate the occasion.

“You’re my forever wedding date (even if you always have shows booked lol), my Disney adventurer, my ride or die, the half that makes me whole, and all of the other clichés,” she wrote. “This year is going to be our greatest adventure yet. I love you so much.”

Gracin, a former Marine,first rose to fame onseason 2 ofAmerican Idolin 2003, and went on to launch a successful country music career. He released his latest single,“Lucky Stars,“in June.

source: people.com