Chris Young‘s step-father — whose name is Michael Harris, and who means so much to the singer that he calls him Dad — suffered a heart attack on Saturday (June 29). Young was out on the road at the time, and he played his Greeley, Colo. show as scheduled, but not without posting a message of gratitude that his dad is OK. “I don’t even have the words,” he wrote in an Instagram post, sharing a carousel of shots from the show. “On a day where my dad had a heart attack, you lifted me up. I love country music fans. I’m happy I played,” he continued. “I’m happy my dad is ok. Much love to all of you….