Blues Guitar
Three dominant 7 chords, a stretchy scale, and a whole lot of feel. Play through a real 12-bar blues in E below.
The 12-bar form, on guitar
Blues guitar leans on the same I-IV-V chords arranged into the classic 12-bar structure. E and A are especially guitar-friendly blues keys, because their I, IV, and V chords all have easy open-position shapes — in E, that's E7 (I), A7 (IV), and B7 (V).
Soloing: minor pentatonic and the blues scale
The minor pentatonic scale, often extended into the blues scale with an added flatted 5th "blue note," is the classic starting point for blues soloing — even over the dominant 7 chords of a major-key-sounding blues. That tension between a minor-flavored scale and major-sounding chords is a huge part of the genre's signature sound.
Phrasing: bends and call-and-response
Blues phrasing leans on string bends (pushing a string to raise its pitch, often bending up into a target chord tone) and call-and-response — a short melodic "call" answered by a repeated or varied "response," mirroring the blues vocal tradition the style grew out of.
Common questions
What key is easiest for beginners to play blues in?
E and A are especially guitar-friendly blues keys because their I, IV, and V chords (E7-A7-B7 or A7-D7-E7) all have easy open-position shapes.
What scale do you solo with over a blues?
The minor pentatonic scale is the most common starting point, often extended into the blues scale by adding a flatted 5th 'blue note,' even over the dominant 7 chords.
What is call-and-response in blues guitar?
A short melodic phrase (the 'call'), followed by an answering phrase (the 'response') that echoes or varies it — a phrasing idea borrowed from blues vocal traditions.
Why do blues progressions use dominant 7th chords instead of plain major chords?
The added flatted 7th gives every chord — even the 'home' I chord — an unresolved, bluesy edge that never fully feels at rest, which is central to the genre's sound.
Play the 12-bar blues on a real fretboard
Melody Monkey visualizes blues progressions and scales live on guitar.
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