"It's a sacred moment. The whole process is for the families," Ingram told WFAA.
Ten families have accepted the hospital’s offer.
Micah Ahern, who was the batboy for Texas Christian University's baseball team, died of cancer in July 2016. He was 7. Micah chose his own heartbeat song before he died. His mother, Linda Ahern, does not listen to it often, but she is comforted knowing it is there.
"For me, it's a reminder that he's not here, but he's alive," Ahern told WFAA. "It's awesome. It's really like the sweetest sound. Isn't it?"