Electric blues guitar format is when the same person sings and plays lead in call and response way, and someone else carries the song and there's no sustain in electric blues guitar or bass picks in blues bass guitar Electric blues guitar frontmen will not carry the song themselves (except slide players) Nobody but the front man will sing
Blues will be sung and played in an inconsequential way
Blues is a focused character study of a man and his style and this can be proven for when it's not, it fails to be interesting This principle is the theme of blues deity Albert King's song 'I'll Play the Blues for You'