Kree Harrison was born and raised in Woodville, Texas. At three, Harrison asked her pastor if she could sing during church. The request was accepted and after she sang, her pastor commented, "I was expecting Jesus Loves Me, but she belted out El Shaddai by Amy Grant. I knew then this child had a special gift."

Over the next several years, Harrison sang for churches, rodeos, weddings and competitions. At eight, she was the opening act for R&B performer Percy Sledge. At nine, she won "Artist of the Year" from Kirbyville Playhouse, and at ten, she sang on The Rosie O'Donnell Show and was invited back on three other occasions. Harrison scored a development deal with Lyric Street Records at ten, which resulted in her family moving from Woodville to Nashville.

After two years with Lyric Street she parted ways with no music being released due to creative differences. Harrison began writing her own songs at the age of fourteen and often found herself in writing sessions with Nashville’s hit writers. At sixteen, Harrison landed her first publishing deal with Crysalis Records. She performed across local venues in Nashville such as the legendary Bluebird Cafe, as well as BMI showcases in Florida, such as the Key West Songwriters Festival and the Sandestin Music Festival. She also sang backup vocals on Kacey Musgraves' album, “Same Trailer Different Park”, and Eli Young Band's album,”Life At Best.”