Simple Chord Progressions (I-IV-V-vi), Keys C, G, D, A

I-iv-IV-V

C: C-Am-F-G

G: G-Em C-D

D: D-Bm-G-A

A: A-F#m-D-E

E: E-C#m-A-B

I-V-IV-vi

C: C-G-F-Am

G: G-D-C-Em

D: D-A-G-Bm

A: A-E-D-F#m

E: E-B-A-C#m

I-IV-V-vi

C: C-F-G-Am

G: G-C-D-Em

D: D-G-A-Bm

A: A-D-E-F#m

E: E-A-B-C#m

I-IV-vi-V

C: C-F-Am-G

G: G-C-Em-D

D: D-G-Bm-A

A: A-D-F#m-E

E: E-A-C#m-B

V-I-vi-I

C: G-C-Am-C

G: D-G-Em-G

D: A-D-Bm-D

A: E-A-F#m-A

E: B-E-C#m-E

iv-I-VI-I

C: Am-C-F-C

G: Em-G-C-C

D: Bm-D-G-D

A: F#m-A-D-A

E: C#m-E-A-E

IV-I-vi-V

C: F-C-Am-G

G: C-G-Em-D

D: G-D-Bm-A

A: D-A-F#m-E

E: A-E-C#m-B