A thirteenth chord

A13 chord for piano presented by keyboard diagrams.
Explanation: The A thirteenth is a seven note chord. Due to practical circumstances, some notes (as a suggestion fifth, ninth, and eleventh) is omitted and the chord is played inverted. The chord is often abbreviated as A13.
Theory: The A thirteenth chord is constructed by adding a third to an eleventh chord.


A13 chord diagram
Notes: A - C# - E - G - B - D - F#

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A chord categories

A Am A7 Am7 Amaj7 A6 Am6 A6/9 A5 A9 Am9 Amaj9 A11 A13 Aadd A7-5 A7+5 Asus Adim Aaug