The electric blues is a type of blues music distinguished by the amplification of the guitar, the bass guitar, and/or the harmonica and other instruments. Electric blues is performed in several regional subgenres, such as Chicago blues, Texas blues, Delta blues and Memphis blues. Though most interpretations of electric blues have a solemn tone through the common uses of the minor pentatonic scale, slow backing, and extended soloing periods, that extend through all subgenres. The following is a list of electric blues musicians.