IiiiIVV

Blues / Rock · C# / D♭

I-III-IV-V in C#

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 C# I-III-IV-V

IDb
iiiF
IVGb
VAb

Hear I-III-IV-V in C#

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 C#

I-IV-V-IDb – Gb – Ab – DbI-V-vi-IVDb – Ab – Bbm – Gbii-V-IEbm – Ab – DbI-vi-IV-VDb – Bbm – Gb – Ab12-Bar BluesDb – Gb – Db – Ab – Gb – Db – AbIV-I-V-viGb – Db – Ab – Bbm

Related Progressions

12-Bar Blues in C#Db – Gb – Db – Ab – Gb – Db – AbI-IV-V-I in C#Db – Gb – Ab – DbI-V-vi-IV in C#Db – Ab – Bbm – GbI-vi-IV-V in C#Db – Bbm – Gb – Ab

I-III-IV-V in C# / D♭

The I-III-IV-V progression in the key of C# uses the chords Db, F, Gb, Ab. These correspond to the I, iii, IV, V degrees of the C# 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 C#, this progression has a characteristic sound shaped by the tonal colour of the C# root — also written as D♭ — common in blues / rock. Practise hearing it until the sequence feels inevitable rather than surprising.