Granger Smith Son
Granger Smith performs at LakeShake at FirstMerit Bank Pavilion on Friday, June 17, 2016, in Chicago. (Photo by Rob Grabowski/Invision/AP)

Granger Smith Performs Heart-Wrenching Single 'Heaven Bound Balloons' For His Late Son

Granger Smith's Sunday (June 24) set at Chicago's Country LakeShake Festival allowed the singer to commemorate the death of his 3-year-old son, River, with a heartbreaking rendition of "Heaven Bound Balloons."

The single was released in April and deals with sending messages to loved ones in Heaven and receiving comforting responses. Smith wrote the song with his late father in mind, but his fans in Chicago will likely associate it from now on with River's tragic passing following a drowning accident at home.

Towards the end of the song, Smith pulled a toy car of Disney's Lightning McQueen — one of River's favorite characters — out of his pocket and became so overcome by emotion that he briefly exited the stage.

Read More: Granger Smith and Wife Amber Share Message With Fans Following Son River's Death

Since River's passing, $100,000 has been raised for Dell Children's Medical Center by his dad's clothing and lifestyle line Yee Yee's commemorative Riv t-shirt.

"We are going to search for every bit of good that we can find in this situation — the worst situation we've been through, hopefully ever," Smith said in a video message posted on June 19. "We're going to constantly search for ways that good can come out of this. That's my commitment to River's legacy."

Smith's recent return to the road with the whole family comes with one condition: no audience meet and greets for the time being.

"I don't think that's the best place for me to be right now," Smith says. "A, it's going to be strange if we have to talk about River and, B, it's going to be strange if we don't talk about River."

Now Watch: Luke Bryan's Family Story