Bad Religion is an American punk rock band that formed in Los Angeles, California in 1980. The band is noted for covering several topics in their lyrics, such as society in general, criticism of religion, politics, equal rights, the media, humanitarianism, personification, mental disorder and the use of drugs. Musically, they are noted for their melodic sensibilities and extensive use of three-part vocal harmonies. The band has experienced multiple line-up changes, with singer Greg Graffin being the band's only constant member, though fellow founding members Jay Bentley and Brett Gurewitz have since rejoined, and guitarist Brian Baker has performed with the group since 1994. The most recent additions to the band are guitarist Mike Dimkich and drummer Jamie Miller, who joined in 2013 and 2015 respectively. To date, Bad Religion has released sixteen studio albums, two live albums, three compilation albums, three EPs, and two live DVDs. They are considered to be one of the best-selling punk rock acts of all time, having sold over five million albums worldwide.