Smith shared on Thursday that his 3-year-old son died in a tragic accident.
Kane Brown is sending his love to good friend Granger Smith.
"I told him already, 'I just want you to know that I love you, man and anything at all you ever need, I'm here for you, brother and I love you, and I'm praying for y'all," Brown shared while speaking with ET's Kevin Frazier at Thursday's CMA Fest in Nashville. Brown and Granger have toured together in the past.
Earlier in the day, Smith revealed on Instagram that his 3-year-old son, River Kelly, died in a tragic accident.
"I have to deliver unthinkable news. We’ve lost our youngest son, River Kelly Smith. Following a tragic accident, and despite doctor’s best efforts, he was unable to be revived," Smith sadly shared. "Amber and I made the decision to say our last goodbyes and donate his organs so that other children will be given a second chance at life. Our family is devastated and heartbroken, but we take solace in knowing he is with his Heavenly Father." Brown had left a comment on Smith's post, as did many of his other country colleagues, expressing his condolences.
As for this year's CMA Fest, Brown is ready to deliver an amazing show for his fans.
"CMA Fest, for me, makes it special because my fans are what got me started and we get to give back to them. I get to see a lot of familiar faces," he said about being part of the festival. "I get to play Nissan Stadium, which is awesome, and it's going to be a good time."
The CMA Fest airs Aug. 4 on ABC. For more on Brown, watch below.