Katy Perry - E.T - Chord

Key G major – E minor Chords C9, Em7, D4, G, D9 Difficulty already in its easiest key

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Capo 0

Em7
You're so hypnotising
C9                    D4
could u be the devil, could you be an angel
Em7
your touch magnetizing
C9                         D4
feels like going floating, leaves my body glowing
Em7
They say be afraid
C9                          D4
you're not like the others, futuristic lover
Em7            C9           D4
different DNA, they don't understand you

   Em7
You're from a whole other world
C9                D4
a different dimension
Em7
you open my eyes
C9                      D4
and im ready to go, lead me into the light

C9         D4
Kiss me, k k kiss me
Em7
infect me with your love, and fill me with your poison
C9        D4
take me, t t take me
Em7
wanna be your victim, ready for abduction
C9     D4             Em7     G
boy, you're an alien, your touch so foreign
C9     D4         Em7     G
its supernatural, extraterrestrial

Em7
You're so super sonic
C9                      D4
wanna feel your powers, stumb me with your lasers
Em7                   C9          D4
your kiss is cosmic, every move is magic

  Em7
You're from a whole other world
C9           D4
a different dimension
Em7
you open my eyes
C9                      D4
and im ready to go, lead me into the light

C9        D4
Kiss me, k k kiss me
Em7                       G
infect me with your love, and fill me with your poison
C9        D4
take me, t t take me
Em7                   G
wanna be your victim, ready for abduction
C9    D4         Em7     G                 C9
boy, you're an alien, your touch so foreign
    D4      Em7     G             C9
its supernatural, extraterrestrial

C9                        C9
There is this transcendental, on another level
  Em7                  D4
boy, you're my lucky star
C9              C9
i wanna walk on your wave length
  Em7                      D9
and be there when you vibrate
C9                 C9
for you i risk it all, All

C9       D4
Kiss me, k k kiss me
Em7                         G
infect me with your love, and fill me with your poison
C9        D4
take me, t t take me
Em7                     G
wanna be your victim, ready for abduction
C9    D4          Em7    G                C9
boy, you're an alien, your touch so foreign
     D4       Em7     G
its supernatural, extraterrestrial

C9  D4  Em7  G    C9
Extraterrestrial

     D4          Em7   G                 C9
boy, you're an alien, your touch so foreign
     D4      Em7    G
its supernatural, extraterrestrial

End of song Play again?

Katy Perry - E.T Tabs

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Harmony analysis

Katy Perry – E.T: key and chord analysis

The song opens on Em7 and ends on G. Its chords belong to both G major and Em, so every chord below is read both ways.

Major view

G major

Brightness rank 2/7 (bright)

Characteristic notes

7 = F# (leading tone, pulls home)
4 = C (the note that leans on the 3rd)

Minor view

E minor

Brightness rank 5/7 (leaning dark)

Characteristic notes

b6 = C (the minor's melancholy)
b7 = D (natural-minor colour)

Which side does the ear lean to?

Our reading: we can't honestly pick a side here — the song moves freely between G major and E minor because it comes to rest on G, it opens on Em and Em is heard 27 times against 13 for G. Try reading the chords both ways and see which feels more like home to you.

Chord degrees: major and relative minor

Show the degrees above the chords — relative to G or to Em; comparing both readings is a practice of its own.

Every chord of the key, listed 1 to 7 separately for each key. Chords played in the song show how often they appear; chords from outside the scale sit next to their own degree.

Seen from G major
Degree	Chord	Role	Notes	In song
I	G	Tonic — home	G · B · D	13×
ii	Am	Supertonic — prepares the dominant	A · C · E	—
iii	Bm	Mediant — a tonic-family shade	B · D · F#	—
V/vi	B	Secondary dominant V/vi — leads to Emsecondary dominant	B · D# · F#	—
IV7	C9	Chromatic colour chordoutside the key	C · E · G · Bb · D	32×
V	D4	Dominant — strongest pull home	D · F# · A	26×
V7	D9	Dominant — strongest pull home	D · F# · A · C · E	1×
vi7	Em7	Relative minor — the melancholy side	E · G · B · D	27×
vii°	F#dim	Leading-tone chord — tension	F# · A · C	—

Seen from E minor
Degree	Chord	Role	Notes	In song
i7	Em7	Tonic — home	E · G · B · D	27×
ii°	F#dim	Supertonic — prepares the dominant	F# · A · C	—
III	G	Relative major — the bright side	G · B · D	13×
iv	Am	Subdominant — moves away from home	A · C · E	—
v	Bm	Minor dominant — soft pull	B · D · F#	—
V	B	Dominant — borrowed from harmonic minor, pulls hard to the tonicharmonic minor	B · D# · F#	—
VI7	C9	Chromatic colour chordoutside the key	C · E · G · Bb · D	32×
VII	D4	Subtonic — steps back to the tonic	D · F# · A	26×
VII7	D9	Subtonic — steps back to the tonic	D · F# · A · C · E	1×

Analysis

The key pair is G major and its relative E minor (1 sharp). 5 different chords appear 99 times in total; 4 of them sit naturally inside the shared scale. C9 step outside the scale as colour chords.

Chord movement

C9 D4 GIV7 → VIV → V EmVI7 → VIIVI → VII ×25
D4 Em7 GV → vi7deceptive cadence EmVII → i7Aeolian arrival ×23
C9 Em7 GIV7 → vi7 EmVI7 → i7VI → i ×2

The move to watch is C9 → D4, heard 25 times. From the G side it reads IV7 → V (IV → V: the lift that builds tension before home); from the Em side it is VI7 → VII (VI → VII: the rising step that heads for the tonic). Knowing where these arrivals fall helps you feel the phrasing and anticipate the next chord.

Improvisation tips

G major pentatonic and E minor pentatonic are the same five notes (G – A – B – D – E): start from G for a brighter phrase, from E for a bluesier one.
Over C9, land on C, E, G — the chord's own tones always sound right on strong beats.
Over Em7, land on E, G, B — the chord's own tones always sound right on strong beats.
Over D4, land on D, F#, A — the chord's own tones always sound right on strong beats.

The song on the circle of fifths

Played in the song — chord of the key
Played — the minor's harmonic V or a secondary dominant
Played — borrowed or outside chord
Home region: IV–I–V and ii–vi–iii

Empty slices are chords the song doesn't use.

Capo and easier keys

With G major shapes

No capo — open G shapes
Capo 3 + E shapes
Capo 5 + D shapes

With E minor shapes

No capo — open Em shapes
Capo 2 + Dm shapes
Capo 7 + Am shapes

Easiest keys on guitar

The song is already written in its easiest key for guitar.

The song's harmonic story

Starting on Em7, the song gives away its key from the very first bar. C9, Em7, D4, G carry the song: IV7–vi7–V–I relative to G, VI7–i7–VII–III relative to Em. No chord leaves the shared scale, so a single pentatonic shape works over the whole song. Keep an ear on C9 → D4 (IV7 → V in G, VI7 → VII in Em): IV → V — the lift that builds tension before home. The final chord is G; the ear comes to rest in G.

This analysis is generated from the song's chords by akorculuk's harmony engine using consistent rules. When you change key, the degrees stay the same; only the chord names change.