Keith Urban and Nicole Kidman continue to mourn the death of the actress' mother, Janelle Ann Kidman, who died on September 7 at age 84.

The 57-year-old music artist was set to perform on the Today show last month, but the appearance was postponed in the wake of the matriarch's unexpected passing.

He eventually performed on the morning show on Wednesday, October 30, and gave an update on how he and his wife, also 57, are coping.

'It’s up and down, you know. It comes in waves, but the outpouring [of support has] been amazing, so thank you, everybody, for that. We so appreciate it,' the singer-songwriter told host Hoda Kotb.

Nicole announced the news of her mom's death via Babygirl director Halina Reijn, who read a statement on her behalf during a Venice International Film Festival panel last month.

Kidman intended to attend the festival and accept the Volpi Cup award for best actress for her role in the erotic drama. 

Her message, delivered by Reijn, read, 'Today I arrived in Venice to find out shortly after, that my beautiful, brave mother Janelle Ann Kidman has just passed.'

Leaving the event early, Nicole explained via the note, 'I am in shock and I have to go to my family, but this award is for her. She shaped me, she guided me and she made me.'

The Big Little Lies star added, 'I am beyond grateful that I get to say her name to all of you through Halina, the collision of life and art is heartbreaking, and my heart is broken.'

She later took to Instagram to share a thank you note with her 10 million followers while sharing throwback photos.

'My sister and I along with our family want to thank you for the outpouring of love and kindness we have felt this week,' she wrote in a joint post with her sibling Antonia Kidman.

'Every message we have received from those who loved and admired our Mother has meant more to us than we will ever be able to express. 

'Thank you from our whole family for respecting our privacy as we take care of each other ❤️,' the caption ended.

Last week Nicole told the Hollywood Reporter that 'it’s been hard' facing her parent's death.

She explained, 'It’s a hard road. I’m hanging in there.'

Her busy schedule is said to have sparked concern among her inner circle, who fear she could suffer a 'burnout' from overloading herself with work.

'Nicole is still looking as amazing as always but she's been through so much, and she seems to be dealing with her grief by throwing herself into work,' a source told Woman's Day magazine.

'There are times when she sleeps on a plane more than a bed. Everyone's worried about her,' the person added.

However, the longtime entertainer appeared to be in good spirits on Saturday evening as she joined her husband on stage at Concert For Carolina benefit show.

She wrapped her arms around her longtime spouse while posing backstage at the event, which was held in Charlotte, North Carolina.

Taking to the stage at one point, the proud wife said to the crowd, 'I do want to say it’s his birthday tonight. And he wanted to be here with you. So here we go.'

Urban revealed on the Today show that the benefit raised more than $25 million for Hurricane Helene relief.