Di'Jonn Grizzell, (born August 29, 1989) better known by his stage name Jonn Hart. is an American Actor Rapper singer from Oakland, California. He is a former member of the band Tha Outfit and was formerly signed to Epic Records.His debut release, "Who Booty", has been in regular rotation on radio stations,peaked at　on the Rhythm Radio Music Chart, and debuted on the Billboard top 40 pop charts in December 2012 &2013 January February ． 　　Hart grew up in a musical family. His mother sang in choir and his stepfather was involved in gospel music and owned his own studio. In an interview with XXL Magazine, Hart stated that he used to visit the studio as a kid and realized at a very young age that he wanted to be involved with music. He began his career with the R&B boy band Tha Outift. He pursued a solo career in 2012 and released the song Who Booty, which featured Iamsu! on the original version and French Montana and E-40 on the remix versions. He graduated James Logan High School and continued his education at Morehouse College in Atlanta. 　　In December 2013, Hart released a single titled "I Can't Feel My Legs", which featured YMCMB singer, songwriter, choreographer and video director Shanell on the assist. 　　Jonn Hart on his new single, "New Chick" issued in July 2015 given a pleasant surprise by getting 50 Cent and G-Unit affiliate Rizself made over some bouncy Bay Area production.