Keith Urban Says Grief Has Been 'Up and Down' Since Wife Nicole Kidman's Mom's Death: 'It Comes in Waves'

The country singer thanked fans for their condolences following his performance on the TODAY show on Wednesday.

Keith Urban is appreciative of fans' condolences.

Speaking on TODAY after performing on Wednesday, Oct. 30, the singer, 57, thanked viewers for their support after the death of his wife Nicole Kidman’s mother Janelle Ann Kidman in September.

"I know you were supposed to be on our plaza awhile ago and then you had an unfortunate death, Nicole’s mom passed away,” host Hoda Kotb said. “We just want to send our condolences and also, how is she and how are you guys doing?”

“Thank you very much and thanks for having us back. We really appreciate that,” Urban, who performed his songs "Chuck Taylors," "Messed Up as Me" and "Somewhere in My Car” on TODAY, replied. "It’s up and down; it comes in waves. But the outpouring’s been amazing. So thank you everyone for that. We really appreciate it.”

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On Saturday, Sept. 7, it was announced at the Venice Film Festival that Kidman had to leave early due to the death of her mother.

A statement written by Kidman and read aloud by Babygirl director Halina Reijn during what would have been the actress’ acceptance speech for best actress for her role in Babygirl, said, "I'm in shock and I have to go to my family, but this award is for her.”

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“She shaped me, she guided me and she made me. I am beyond grateful that I get to say her name to all of you through Halina," she added.

"The collision of life and art is heartbreaking, and my heart is broken,” the statement concluded. 

Related: Zoe Saldaña Says Shooting Lioness Season 2 Was 'Easier' Because of Her 'Beautiful Friendship' with Nicole Kidman (Exclusive)

On Thursday, Sept. 12, the A Family Affair star thanked fans for the “love and kindness” she received after her mother’s death.

Sharing snaps of her mother and sister Antonia Kidman on Instagram, she wrote, “My sister and I along with our family want to thank you for the outpouring of love and kindness we have felt this week.”

Kidman also spoke about her mother at the  premiere of Lioness season 2 in Los Angeles on Oct. 23.

“I wish my mama was here,” the Oscar winner, 57, told The Hollywood Reporter. “That’d be the one thing I’d say. Everything is great with work but I wish my mama was here.”