The Blues When the Blues was brought to Chicago it became a more powerful, hard-edged type of music, but kept its original form. This consisted of the two basic kinds of traditional blues: the Slow Blues and the Fast Blues. The names do not define the tempo of the two, because both can be played either way. The Slow Blues is the most common kind of Blues and is the category that most Blues fall into. It is made up of the standard 12-bar, three-line, 4/4 Blues and can be played in uptempo or down. Fast Blues is also twelve bars long and played in 4/4, but has four lines of verse. This is the form that evolved into Boogie-Woogie and Blues Shout in the twenti