In addition to being an incredibly successful country singer and songwriter, Carrie Underwood is a new mother to son Isaiah, who was born in February. We're guessing that sweet little Isaiah gets to hear some stellar lullabies every night, but in addition to singing cute ditties for her infant son in the privacy of their home, the proud new mama has some special new music in the works.

According to Unreality TV, Underwood plans to write music for her son on one of forthcoming studio albums.

"I just kind of feel a little sad 'cause all my songs are about having girls," she explains, laughing. Underwood's popular hits "Mama's Song," "All-American Girl" and "Forever Changed" all discuss mother-daughter relationships, so the award-winning songstress admits she hopes to write some songs specifically for Isaiah.

“Like, little boy baby Fisher’s got nothin’!,” she jokes, “even ‘Forever Changed,’ which is one of my favorite songs, is definitely like a mother/daughter kind of a song, so … I’m gonna have to get on that.”

The star notes that 'Mama's Song,' a song she co-wrote for her mother before marrying Nashville Predator Hockey player Mike Fisher in 2010, has a "whole new meaning" now that she has a child of her own.

Underwood made the announcement of Isaiah's arrival in early March, when she uploaded a photo of his hand and captioned the photo, "Tiny hands and tiny feet...God has blessed us with an amazing gift! Isaiah Michael Fisher--born on February 27. Welcome to the world, sweet angel!"

Since then, she's revealed a full picture of his face, also showing that the little guy is taking after his hockey player dad.

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