Chords in the key of E major
The chord chart below lists all the common traids and 
four note extended chords belonging to the key of E major. 
Roman numerals indicate each chords position relative to 
the scale.

E major scale notes: E F# G# A B C# D#
Major key chord sequence: Maj min min Maj Maj min dim
I	ii	iii	IV	V	vi	vii
Emaj	F#min	G#min	Amaj	Bmaj	C#min	D#dim
Emaj7	F#min7	G#min7	Amaj7	B7	C#min7	D#m7b5
Common chord progressions in E major
I - IV - V	E - A - B
I - vi - IV - V	E - C#m - A - B
ii - V - I	F#m7 - B7 - Emaj7