Maren Morrishad a bittersweet moment while accepting the album of the year award for her LPGIRLat the 2019Country Music Association Awards.

“I would be really remiss if I didn’t mention a huge facet of why this album sounds the way it does, and we miss him so dearly,” Morris, 29, said of Busbee. “He texted me the morning that we got the nomination for album of the year this year, and we were so excited — that’s our friend, Busbee.”

“His wife, Jess, is here tonight and she looks so beautiful,” Morris continued. “Thank you for sharing your husband with us once a month. My heart goes out you and your beautiful daughters. I hope when they listen to this album…I hope they know how amazing their father was. Thank you country music, thank you to the fans, thank you.”

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Maren Morris

News of Busbee’s death broke on Sept. 29. Though a cause of death was not reported, a friend toldVarietythat Busbee wasundergoing treatment for glioblastoma— an aggressive brain tumor that last year took the life of Sen. John McCain — after being diagnosed with it over the summer. Frequent collaboratorCarly Pearceconfirmed the diagnosisduring a tribute at her show the same night.

Check out PEOPLE’sfull CMA Awards coverageto get the latest news on country music’s biggest night.

BeforeGIRL, Busbee had penned tunes and produced songs including “Once,” “80s Mercedes” and “How It’s Done” for Morris’ 2016 album,Hero.

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Along with Morris, Busbee created a slew of hits for other artists likeKeith Urban,Carrie Underwood,Blake Shelton,Lady Antebellum,Florida Georgia Line,Garth Brooks,Rascal Flatts,Little Big Town,Jason Aldean,Kellie Picklerand Hunter Hayes.

Outside of country, Busbee also worked with a number of pop artists likeChristina Aguilera,Gwen Stefani,Kelly Clarkson,Shakira, 5 Seconds of Summer, and theBackstreet Boys. He co-wrote “Try” forPinkin 2012, and it went to No. 1.

During the CMA Awards, Morris performed the title track fromGIRL.Before the show, she said the performance would be extra special because her future son is a part of it.

“When he looks back performing at this particular awards show it’s going to be this thing where he was in there!” she toldEntertainment Tonighton the red carpet before the show.

The 2019 CMA Awards aired live from Nashville’s Bridgestone Arena on Wednesday, Nov. 13, at 8 p.m. ET.

source: people.com