Open G-tuning ('slack key')

6

5

4

3

2

1

D

G

D

G

B

D

Open E-tuning

6

5

4

3

2

1

E

B

E

G#

B

E

Open D-tuning

6

5

4

3

2

1

D

A

D

F#

A

D

Open C-tuning

6

5

4

3

2

1

C

G

C

G

C

E

Modale D-tuning

6

5

4

3

2

1

D

A

D

G

A

D

D-cross tuning (open D mineur)

6

5

4

3

2

1

D

A

D

F

A

D

E-cross tuning (open E mineur)

6

5

4

3

2

1

E

B

E

G

B

E

Broken D-tuning

6

5

4

3

2

1

D

A

D

G

B

E

Variation on broken D-tuning

6

5

4

3

2

1

D

A

D

G

A

E