Arpeggios:
G7 - G B D F
C7 - C E G Bb
Dm7 - D F A C
C#dim7 - C# E G Bb
E7 - E G# B D
Am7 - A C E G
D7 - D F# A C
Scale suggestions for improvisation:
G minor pentatonic scale - G Bb C D F (G)
G minor blues scale - G Bb C C# D F (G)
G major pentatonic scale: G A B D E (G)
Then....
G Mixolydian Mode: G A B C D E F (G) - G7 chords
G Dorian Mode: G A Bb C D E F (G) - C7 chords
A Harmonic Minor Scale: A B C D E F G# (A) - E7 Chords
A Dorian Mode: A B C D E F# G (A) - Am7 chords
D Mixolydian Mode: D E F# G A B C (D) - D7 chords
A Dorian and D Mixolydian contains the same notes as G Major Scale!
G Major Scale: G A B C D E F# (G)
You can also treat the E7 as an E7alt chord and use the E Altered Scale...
E Altered Scale: E F G G# Bb C D (E)
E Altered Scale is also known as E Super Locrian - and it's the 7th mode of the F Melodic Minor Scale.
