Arnold "Gatemouth" Moore born in Yazoo City, Mississippi, was an American blues and gospel singer, songwriter and pastor. A graduate of Booker T. Washington High School in Memphis, he claimed to have earned his nickname as a result of his loud speaking and singing voice.
During his career as a recording artist, Moore worked with various jazz musicians, including Bennie Moten, Tommy Douglas and Walter Barnes, and had songs recorded by B.B. King and Rufus Thomas.
In 1949, Moore was ordained as a minister First Church of Deliverance in Chicago and went on to preach and perform as a gospel singer and DJ at several radio stations in Memphis, Birmingham and Chicago.
Moore holds distinctions as a survivor of the 1940 Natchez Rhythm Club Fire and as the first blues singer to perform at Carnegie Hall. A brass note on Beale Street Walk of Fame was dedicated to Moore in 1996. He was also featured in Martin Scorsese's 2003 documentary The Blues.