Master Blaster (Jammin') by Stevie Wonder

Overview

Key: A minor · Chords used: 7 · Sections: 5

Form: Intro → Intro → A Section → A Section → B 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

Intro 1

• Am – G – F – Em – D – Am – G
  i – bVII – bVI – v – IV – i – bVII

Intro 2

Same chords as Intro 1.

A Section 1

• Am – G – F – Em – D – Am – G
  i – bVII – bVI – v – IV – i – bVII

A Section 2

Same chords as A Section 1.

B Section

• Am – E7 – D7 – E7 (×2)
  i – V7 – IV7 – V7
• Am
  i

Chord vocabulary

Chord	Roman numeral	Role	Heard in
Am	i	Home chord (tonic)	Intro, A Section, B Section
G	bVII	In the key	Intro, A Section
F	bVI	In the key	Intro, A Section
Em	v	In the key	Intro, A Section
D	IV	Borrowed from A major	Intro, A Section
E7	V7	In the key	B Section
D7	IV7	Outside the key (chromatic)	B Section

Harmonic highlights

• D (IV) is borrowed from the parallel key, A major.

Sources & accuracy

• Chords: the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). Community chord chart “Master Blaster - Flinner” (credited “Wonder Stevie”, style RnB) 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).
• Cross-check: the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). Community chord chart “Master Blaster” (credited “Wonder Stevie”, style Reggae) from the forum file linked here, CC BY 4.0 via ChoCo. Performer confirmed from the Billboard year-end charts. A separately posted chart of the same song; its chords match this page's closely when both are read in the same key (similarity 64%).
• 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.
• About the song: Wikipedia.
• Verified: two community charts of this song, posted in different forum threads, agree on its harmony. They're still charts, not transcriptions checked against the recording.
• Rhythm and chord durations aren't shown; each step is one chord change.