Mack Williams Jr. is a rap artist who performs under the name Mr. Mack. He was born in Alcoa, Tennessee, and graduated from Alcoa High School.He had released several independent mixtapes prior to signing with Universal Republic Records. His biggest hit to date, the 2006 single "Where You From? (Da 865)", became a state-wide anthem in the Tennessee rap scene.In 2007, "Where You From?" was featured on a compilation album, Preview Presents Greeting From Knoxville, released by Knoxnews.com.Mr.