IiiiIVV

Blues / Rock · A

I-III-IV-V in A

A blues-influenced progression with a major III chord instead of the diatonic iii minor. The major III gives it a bright, slightly unexpected lift.

Chords in A I-III-IV-V

IA
iiiC#
IVD
VE

Hear I-III-IV-V in A

I-III-IV-V in All 12 Keys

CC – E – F – GC#D♭Db – F – Gb – AbDD – F# – G – AD#E♭Eb – G – Ab – BbEE – G# – A – BFF – A – Bb – CF#G♭F# – A# – B – C#GG – B – C – DG#A♭Ab – C – Db – EbAA – C# – D – EA#B♭Bb – D – Eb – FBB – D# – E – F#

Other Progressions in A

I-IV-V-IA – D – E – AI-V-vi-IVA – E – F#m – Dii-V-IBm – E – AI-vi-IV-VA – F#m – D – E12-Bar BluesA – D – A – E – D – A – EIV-I-V-viD – A – E – F#m

Related Progressions

12-Bar Blues in AA – D – A – E – D – A – EI-IV-V-I in AA – D – E – AI-V-vi-IV in AA – E – F#m – DI-vi-IV-V in AA – F#m – D – E

I-III-IV-V in A

The I-III-IV-V progression in the key of A uses the chords A, C#, D, E. These correspond to the I, iii, IV, V degrees of the A major scale.

A blues-influenced progression with a major III chord instead of the diatonic iii minor. The major III gives it a bright, slightly unexpected lift. In A, this progression has a characteristic sound shaped by the tonal colour of the A root — common in blues / rock. Practise hearing it until the sequence feels inevitable rather than surprising.