Every seventh chord is made up of the 1st, 3rd, 5th and b7th notes of the major scale
Choose a chord below to see an example (with chord diagrams)
F
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The F major scale is
F
|
G
|
A
|
A#
|
C
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D
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E
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1
|
2
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3
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4
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5
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6
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7
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To make an “F seventh” (F7) chord we use
the 1st note F
the 3rd note A
the 5th note C
the b7th (half step lower from the 7th)
note D#
This gives us the notes F, A, C and D# which form the “F
seventh” chord
"F seventh" (F7) on the guitar
"F seventh" (F7) on the piano