Mar42022

5 Seconds of Summer (5SOS) – Complete Mess Chords on Piano & Ukulele

Updated January 8, 2026

ChordsD Am G

KeyKeyCapo

View

These are Complete Mess chords by 5 Seconds of Summer (5SOS) on Piano, Ukulele, Guitar, and Keyboard.

[INTRO]
 D Am G D

 [VERSE]
   D                             Am
 Caught up in Heaven, but your Heaven
ain't the same
           G                       D
 And I’ve never been a saint, have I?
  D                       Am
 This evanescence always fleeting
like a flame
           G                     D
 But I'm never one to change, am I?

 [PRE-CHORUS]
   D                      Am
 Call it a lesson when I feel
you slide away
          G                       D
 And I'm missin’ out on half my life

 [CHORUS]
  D                 Am
 Oh, you make me complete
                G
 You make me complete
                   D
 You make me a complete mess
 D                 Am
 Oh, you make me complete
                G
 You make me complete
                 D
 You make me a complete mess

Feel free to use our free Chord Shape Generator to see every chord in this song on guitar, ukulele and piano.

[CHORDS]
  D Am G D

 [VERSE]
   D                              Am
 Hang on to moments like they'll never
 drift away
                G                   D
 'Cause you'll never get to say goodbye
 D                             Am
 I ask no questions as your colours
take their hold
          G                     D
 As my darkness turns to gold inside

 [PRE-CHORUS]
     D                        Am
 I learned my lesson when I felt
 you slip away
            G                    D
 And I'm missing out on half my life

 [CHORUS]
  D                 Am
 Oh, you make me complete
                G
 You make me complete
                   D
 You make me a complete mess
 D                 Am
 Oh, you make me complete
                G
 You make me complete
                 D
 You make me a complete mess

 [BRIDGE]
  D Am G           D
 (You make me a complete mess)
  D Am G           D
 (You make me a complete mess)
    D                            Am
 Caught up in Heaven, but your Heaven
 ain't the same
           G                      D
 But I've never been a saint, have I?

Check out Musical Tips from our BLOG

[CHORUS]
 D                 Am
 Oh, you make me complete
                G
 You make me complete
(You make me complete)
                  D
 You make me a complete mess
 D                  Am
 Oh, you make me complete
(You make me complete)
                G
 You make me complete
(You make me complete)
                  D
 You make me a complete mess

How to play Complete Mess: key, chords and progression

Complete Mess by 5 Seconds of Summer (5SOS) sits in G major (one sharp: F♯), and you need 3 chords to play it: D, Am and G.

The backbone of the song is D – Am – G – D (V – ii – I – V in G major). In solfa, that is soh – reh – doh – soh. Practise these 4 changes until they feel natural and you can play most of it.

Beginner-friendly: every chord is an open chord on guitar, so you can play it without a capo or barre chords.