Augmented Twelfth Intervals

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Augmented Twelfth Intervals

An augmented twelfth is the distance from any note to a note twenty half-steps away either ascending or descending. Another definition is a perfect octave plus an augmented fourth. It is an dissonant interval.

Playing augmented twelfths on the guitar requires using the pick to strike the low note and the second finger to strike the high note. Strike the low note with a downward motion and strike the high note with an upward motion, as if you are trying to pinch the strings.

Be sure your guitar is in tune before playing the following examples.

A Augmented Twelfth Interval on the Guitar

An augmented twelfth above A is E# an octave above A. Notice that E# is actually an F note. However, an F above A is a minor sixth. Also notice that a perfect twelfth above A is E. An augmented twelfth is one more half-step than a perfect twelfth. Therefore, to indicate this is an augmented twelfth an E# is used.

Guitar tablature of A augmented twelfth intervals

Bb (A#) Augmented Twelfth Interval on the Guitar

An augmented twelfth above Bb is F# an octave above Bb.

An augmented twelfth above A# is Ex (E double sharp) an octave above A#. Notice that an Ex is actually an F# note. However, an F# an octave above A# is a minor thirteenth. Therefore, to indicate this is an augmented twelfth an Ex is used.

Guitar tablature of A#/Bb augmented twelfth intervals

B Augmented Twelfth Interval on the Guitar

An augmented twelfth above B is Fx (F double sharp) an octave above B. Notice that Fx is actually a G note. However, a G an octave above B is a minor thirteenth. Also notice that a perfect twelfth above B is F#. An augmented twelfth is one more half-step than a perfect twelfth. Therefore, to indicate this is an augmented twelfth an Fx is used.

Note: Cb is a B. A perfect twelfth above Cb is G

Guitar tablature of B augmented twelfth intervals

C Augmented Twelfth Interval on the Guitar

An augmented twelfth above C is G# an octave above C.

Note:B# is a C. A perfect twelfth above B# is Fx# (F triple sharp) an octave above B#.

Guitar tablature of C augmented twelfth intervals

Db (C#) Augmented Twelfth Interval on the Guitar

An augmented twelfth above Db is A an octave above Db.

An augmented fourth above C# is Gx (G double sharp) an octave above C#. Notice that Gx is actually an A note. However, an A above C# is a minor thirteenth. Also notice that a perfect twelfth above C# is G#. An augmented twelfth is one more half-step than a perfect twelfth. Therefore, to indicate this is an augmented twelfth an Gx is used.

Guitar tablature of C#/Db augmented twelfth intervals

D Augmented Twelfth Interval on the Guitar

An augmented twelfth above D is A# an octave above D.

Guitar tablature of D augmented twelfth intervals

Eb (D#) Augmented Twelfth Interval on the Guitar

An augmented twelfth above Eb is B an octave above Eb.

An augmented twelfth above D# is Ax (A double sharp) an octave above D#. Notice that Ax is actually a B note. However, a B above D# is a minor thirteenth. Also notice that a perfect twelfth above D# is A#. An augmented twelfth is one more half-step than a perfect twelfth. Therefore, to indicate this is an augmented twelfth an Ax is used.

Guitar tablature of D#/Eb augmented twelfth intervals

E Augmented Twelfth Interval on the Guitar

An augmented twelfth above E is B# an octave above E.

Note: Fb is an E. An augmented twelfth above Fb is C an octave above Fb.

Guitar tablature of E augmented twelfth intervals

F Augmented Twelfth Interval on the Guitar

An augmented twelfth above F is C# an octave above F.

Note: E# is an F. An augmented twelfth above E# is Bx (B double sharp) an octave above E#.

Guitar tablature of F augmented twelfth intervals

F# (Gb) Augmented Twelfth Interval on the Guitar

An augmented twelfth above F# is Cx (C double sharp) an octave above F#. Notice that Cx is actually a D note. However, a D above F# is a minor thirteenth. Also notice that a perfect twelfth above F# is C#. An augmented twelfth is one more half-step than a perfect twelfth. Therefore, to indicate this is an augmented twelfth a Cx is used.

An augmented twelfth above Gb is D.

Guitar tablature of F#/Gb augmented twelfth intervals

G Augmented Twelfth Interval on the Guitar

An augmented twelfth above G is D# an octave above G.

Guitar tablature of G augmented twelfth intervals

Ab (G#) Augmented Twelfth Interval on the Guitar

An augmented twelfth above Ab is E an octave above Ab.

An augmented twelfth above G# is Dx an octave above G#. Notice that Dx is actually an E note. However, an E above G# is a minor thirteenth. Also notice that a perfect twelfth above G# is D#. An augmented twelfth is one more half-step than a perfect twelfth. Therefore, to indicate this is an augmented twelfth a Dx is used.

Guitar tablature of G#/Ab augmented twelfth intervals

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