Acoustic · Beginner · major key
I–Isus2–I–Isus4 shimmer
I – Isus2 – I – Isus4 — One chord, decorated with sus2 and sus4 — great with open strings.
Chord shapes in C major (standard tuning)
Using a different tuning? Open it in the Looper — it finds playable shapes for whatever tuning you choose.
How the chords work
Written in Roman numerals, this progression is I – Isus2 – I – Isus4 — in C major that is C – Csus2 – C – Csus4. Each numeral is a step of the scale; upper case is a major chord, lower case minor.
- I — the home chord — the progression feels finished when it lands here.
I–Isus2–I–Isus4 shimmer in all 12 keys
| Key | Chords | Hear / play |
|---|---|---|
| C major | CCsus2CCsus4 | Looper |
| G major | GGsus2GGsus4 | Looper |
| D major | DDsus2DDsus4 | Looper |
| A major | AAsus2AAsus4 | Looper |
| E major | EEsus2EEsus4 | Looper |
| B major | BBsus2BBsus4 | Looper |
| F# major | F#F#sus2F#F#sus4 | Looper |
| Db major | DbDbsus2DbDbsus4 | Looper |
| Ab major | AbAbsus2AbAbsus4 | Looper |
| Eb major | EbEbsus2EbEbsus4 | Looper |
| Bb major | BbBbsus2BbBbsus4 | Looper |
| F major | FFsus2FFsus4 | Looper |
Practice ideas
- Beginners: play one strum per chord and say the chord names out loud, then two strums, then a steady down-down-up-up-down-up pattern.
- Change keys with a capo: keep the C major shapes and move a capo up — the capo calculator shows which fret gives the key you want.
- Solo over it: loop it in the Looper and improvise with the C major pentatonic or C major scale — the scale pages show every position and play a backing track.
- Train your ear: the progression ear trainer mixes this with similar progressions until you can tell them apart.
Similar progressions
- Isus4–I–IVsus2–IV Isus4 – I – IVsus2 – IV
- Acoustic add9 loop Iadd9 – V – vi – IVadd9
- IV–V–I cadence loop IV – V – I – I
- I–IV–V7–I I – IV – V7 – I
- I–vi–I–vi–IV–V ballad I – vi – I – vi – IV – V – I – V
- Plagal "amen" cadence I – IV – I – IV
← Imaj7–I6 vamp · Isus4–I–IVsus2–IV →
← All 198 chord progressions · Generate a new one
Questions
What chords are in the I – Isus2 – I – Isus4 progression?
In C major: C – Csus2 – C – Csus4. In C major / A minor: C – Csus2 – C – Csus4. The table on this page lists all 12 keys.
What is the best key to play I – Isus2 – I – Isus4 on guitar?
C major uses the most open-position chord shapes in standard tuning. Use a capo with those shapes to reach other keys.