PianoChords.studio

The Lazy Song by Bruno Mars

Piano chords, voicings & structure breakdown · 14 steps · 6 unique chords · 2010s

Community chart. These chords come from a chart a musician wrote and shared on the iReal Pro forums, not from a transcription checked against the recording. Charts are sometimes written in a different key or simplified, and no second chart of this song agreed closely enough to mark this page verified. Trust your ears.
A Section 1Step 1 of 14

B

LeftB1, F♯2RightB3, D♯4, F♯4
C4B1B3F♯2D♯4F♯4
Left hand Right hand Middle C (C4)

No source cited for this step

Harmonic Analysis & Structure

Overview

Key: B major · Chords used: 6 · Sections: 10

Form: A Section → A Section → B Section → B Section → C Section → Bridge → C Section → Bridge → D Section → D Section

Where these chords come from: a chord chart of this song written by a musician and shared on the iReal Pro forums, archived in the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). It's one musician's reading of the song, not a transcription checked against the recording. This page shows that chart as-is: the analysis below is generated directly from it by code, not written by AI. Consecutive repeats of a chord are shown once, and the piano voicings are our playable arrangement of each chord symbol, not a note-for-note transcription.

Section by section

A Section 1

  • B – F♯ – E
    I – V – IV

A Section 2

Same chords as A Section 1.

B Section 1

  • C♯m – D♯m – E – F♯
    ii – iii – IV – V

B Section 2

Same chords as B Section 1.

C Section 1

  • B – F♯ – E
    I – V – IV

Bridge 1

  • E
    IV

C Section 2

Same chords as C Section 1.

Bridge 2

Same chords as Bridge 1.

D Section 1

  • C♯m – F♯ – A♭
    ii – V – VI

D Section 2

Same chords as D Section 1.

Chord vocabulary

ChordRoman numeralRoleHeard in
BIHome chord (tonic)A Section, C Section
F♯VIn the keyA Section, B Section, C Section, D Section
EIVIn the keyA Section, B Section, C Section, Bridge
C♯miiIn the keyB Section, D Section
D♯miiiIn the keyB Section
A♭VIOutside the key (chromatic)D Section

Sources & accuracy

  • Chords: the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). Community chord chart “Lazy Song 2” (credited “Mars Bruno”, style Medium Swing) from the forum file linked here, CC BY 4.0 via ChoCo. Performer confirmed from the Billboard year-end charts.
  • Section names: from the chart's own markings: section names written on the chart (Intro, Verse, Chorus…) are kept, and rehearsal letters are shown as “A Section”, “B Section” and so on (the B of an AABA song is called the Bridge).
  • Chord charts are often written in a key that suits a particular singer or band, so this may not be the key of the original recording.
  • Not verified: other charts of this song differ in places from this one, so this page isn't marked verified.
  • Rhythm and chord durations aren't shown; each step is one chord change.

Sources & Accuracy

Every chord on this page comes from the community chart listed first below. Piano voicings are our arrangement of the reported chord symbols, not a note-for-note transcription.

  • Chords from a chart a musician wrote and shared on the iReal Pro forums (archived in the ChoCo research dataset); may be in a different key from the recording, and not checked against it.

    Community chord chart “Lazy Song 2” (credited “Mars Bruno”, style Medium Swing) from the forum file linked here, CC BY 4.0 via ChoCo. Performer confirmed from the Billboard year-end charts.

All Piano Voicings

#SectionChordLeft handRight handSources
1A Section 1BB1, F♯2B3, D♯4, F♯4—
2A Section 1F♯F♯2, C♯3A♯3, C♯4, F♯4—
3A Section 1EE2, B2B3, E4, G♯4—
4B Section 1C♯mC♯2, G♯2C♯4, E4, G♯4—
5B Section 1D♯mD♯2, A♯2A♯3, D♯4, F♯4—
6B Section 1EE2, B2B3, E4, G♯4—
7B Section 1F♯F♯2, C♯3A♯3, C♯4, F♯4—
8C Section 1BB1, F♯2B3, D♯4, F♯4—
9C Section 1F♯F♯2, C♯3A♯3, C♯4, F♯4—
10C Section 1EE2, B2B3, E4, G♯4—
11Bridge 1EE2, B2B3, E4, G♯4—
12D Section 1C♯mC♯2, G♯2C♯4, E4, G♯4—
13D Section 1F♯F♯2, C♯3C♯4, F♯4, A♯4—
14D Section 1A♭A♭2, E♭3C4, E♭4, A♭4—