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Eight Bar BluesAn eight bar blues is a typical blues chord progression, taking eight 4/4 bars to the verse. A basic example of the progression would look like this, using T to indicate the tonic, S for the subdominant, and D for the dominant, and representing one chord per beat: T T S S T T T T S S S S T T T T T T T T S S S S T T D D T T T T (The same chord progression can also be called a sixteen-bar blues, if each symbol above is taken to be a half note in 2/2 or 4/4 time -- blues has not traditionally been associated with notation, so its form becomes a bit slippery when written down.) Many variations are possible. For instance, seventh chords are often used just before a change, and more changes can be added. A more complicated example might look like this, where "7" indicates a seventh chord: T T S7 S7 T T T7 T7 S S S7 S7 T T T T T T T7 T7 S S S7 S7 T T D7 D7 T T T D7 When the last bar contains the dominant, that bar can be called a turnaround. Finally, here is an example showing the pattern in the key of D, and how it fits with the lyrics of a given verse. One chord symbol is used per beat, with "-" representing the continuation of the previous chord: D - Woke up this morning with the G - D - D7 - blues down in my soul G - Woke up this morning with the G7 - D - - - blues down in my soul D - D7 - Woke up this morning with the blues in my soul G - Saying "My baby gone and left me, got a G7 - heart black as coal" D - Woke up this morning with the A A7 D - A7 - blues down in my soul Some well known eight bar blues are "Ain't Nobody's Business," "Cherry Red," and "(Romancing) In The Dark." See also: twelve bar blues, chord progression.
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