There appear to be five artists under the name Jag: 1. JAG consists of Joe Regan, Aaron Tyler King, and Gant O'Brien.. Mississippi natives now living in Nashville, playing rock n roll music. (http://www.facebook.com/jagmusicpage) 2. jag aka founder of FUNKATOMIC producer song writer straight out of south los angeles work with artist like ONS el sonador check out jag at myspace.com/funkatomic 3. JAG was a Christian rock band in the early 1990s whose name was derived from an acronym of the name of its lead singer, John Alan Garies.