Major view
Gb major
Brightness rank 2/7 (bright)
Characteristic notes
- 7 = F (leading tone, pulls home)
- 4 = Cb (the note that leans on the 3rd)
Katy Perry - Last Friday Night - Chord
Key Gb major – Eb minor Chords B, Abm, Ebm, Db, C# Easy key G
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Key: Gb | D#m | Ebm
Capo: 0
B Abm Ebm C# B There's a stranger in my bed Abm There's a pounding my head Ebm Glitter all over the room Db Pink flamingos in the pool B I smell like a minibar Abm Dj's passed out in the yard Ebm Barbie's on the barbeque Db There's a hickie or a bruise B Pictures of last night Abm Eended up online Ebm I'm screwed Db Oh well B It's a black top blur Abm Ebm Db But I'm pretty sure it ruled B Last Friday night Abm Yeah we danced on tabletops Ebm And we took too many shots Db Think we kissed but I forgot B Last Friday night Abm Yeah we maxed our credit cards Ebm And got kicked out of the bar Db So we hit the boulevard B Last Friday night Abm We went streaking in the park Ebm Skinny dipping in the dark Db Then had a menage a trois B Last Friday night Abm Yeah I think we broke the law Ebm Always say we're gonna stop op Db Whoa oh oah B This Friday night Abm Ebm Db Do it all again B This Friday night Abm Ebm Db Do it all again B Trying to connect the dots Abm Don't know what to tell my boss Ebm Think the city towed my car Db Chandelier is on the floor B With my favorite party dress Abm Warrants out for my arrest Ebm Think I need a ginger ale Db That was such an epic fail B Pictures of last night Abm Ended up online Ebm I'm screwed Db Oh well B It's a blacked out blur Abm Ebm Db But I'm pretty sure it ruled Damn B Last Friday night Abm Yeah we danced on table tops Ebm And we took too many shots Db Think we kissed but I forgot B Last Friday night Abm Yeah we maxed our credits card Ebm And got kicked out of the bars Db So we hit the boulevards B Last Friday night Abm We went streaking in the park Ebm Skinny dipping int he dark Db Then had a menage a trois B Last Friday Night Abm Yeah I think we broke the law Ebm Always say we're gonna stop op Db Oh whoa oh B This Friday night Abm Ebm Db Do it all again Do it all again B This Friday night Abm Ebm Db Do it all again Do it all again This Friday night B Abm Ebm Db B Abm Ebm Db B Last Friday night Abm Yeah we danced on table tops Ebm And we took too many shots Db Think we kissed but I forgot B Last Friday night Abm Yeah we maxed our credit cards Ebm And got kicked out of the bar Db So we hit the boulevard B Last Friday night Abm We went streaking in the park Ebm Skinny dipping in the dark Db Then had a menage a trois B Last Friday night Abm Yeah I think we broke the law Ebm Always say we're gonna stop Db Oh whoa oh B This Friday night Abm Ebm Db Do it all again
End of song Play again?
Katy Perry - Last Friday Night Tabs
NotesX
Harmony analysis
Katy Perry – Last Friday Night: key and chord analysis
The song opens on B and ends on Db. Its chords belong to both Gb major and Ebm, so every chord below is read both ways.
Minor view
Eb minor
Brightness rank 5/7 (leaning dark)
Characteristic notes
- b6 = Cb (the minor's melancholy)
- b7 = Db (natural-minor colour)
Which side does the ear lean to?
Our reading: to us the song feels closer to the Eb minor side because Ebm is heard 28 times while Gb never appears. That is an interpretation, not a rule — the same chords are just as valid seen from Gb major, and switching between the two views is exactly where the practice value lies.
Chord degrees: major and relative minor
Show the degrees above the chords — relative to Gb or to Ebm; 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.
| Degree | Chord | Role | Notes | In song |
|---|---|---|---|---|
| I | Gb | Tonic — home | Gb · Bb · Db | — |
| ii | Abm | Supertonic — prepares the dominant | Ab · Cb · Eb | 28× |
| iii | Bbm | Mediant — a tonic-family shade | Bb · Db · F | — |
| V/vi | Bb | Secondary dominant V/vi — leads to Ebmsecondary dominant | Bb · D · F | — |
| IV | B | Subdominant — moves away from home | B · D# · F# | 28× |
| V | Db | Dominant — strongest pull home | Db · F · Ab | 27× |
| V | C# | Dominant — strongest pull home | C# · E# · G# | 1× |
| vi | Ebm | Relative minor — the melancholy side | Eb · Gb · Bb | 28× |
| vii° | Fdim | Leading-tone chord — tension | F · Ab · Cb | — |
| Degree | Chord | Role | Notes | In song |
|---|---|---|---|---|
| i | Ebm | Tonic — home | Eb · Gb · Bb | 28× |
| ii° | Fdim | Supertonic — prepares the dominant | F · Ab · Cb | — |
| III | Gb | Relative major — the bright side | Gb · Bb · Db | — |
| iv | Abm | Subdominant — moves away from home | Ab · Cb · Eb | 28× |
| v | Bbm | Minor dominant — soft pull | Bb · Db · F | — |
| V | Bb | Dominant — borrowed from harmonic minor, pulls hard to the tonicharmonic minor | Bb · D · F | — |
| VI | B | Submediant — warm colour | B · D# · F# | 28× |
| VII | Db | Subtonic — steps back to the tonic | Db · F · Ab | 27× |
| VII | C# | Subtonic — steps back to the tonic | C# · E# · G# | 1× |
Analysis
The key pair is Gb major and its relative Eb minor (6 flats). 5 different chords appear 112 times in total; 5 of them sit naturally inside the shared scale. Everything stays inside one scale, which is why the song is easy to follow by ear.
Chord movement
- Abm Ebm Gbii → vi Ebmiv → iminor plagal ×28
The move to watch is Abm → Ebm, heard 28 times. From the Ebm side it is iv → i (minor plagal: deep and melancholic); from the Gb side it reads ii → vi. Knowing where these arrivals fall helps you feel the phrasing and anticipate the next chord.
Improvisation tips
- Gb major pentatonic and Eb minor pentatonic are the same five notes (Gb – Ab – Bb – Db – Eb): start from Gb for a brighter phrase, from Eb for a bluesier one.
- Over B, land on B, D#, F# — the chord's own tones always sound right on strong beats.
- Over Abm, land on Ab, Cb, Eb — the chord's own tones always sound right on strong beats.
- Over Ebm, land on Eb, Gb, Bb — 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 Gb major shapes
- Capo 2 + E shapes
- Capo 4 + D shapes
- Capo 6 + C shapes
With Eb minor shapes
- Capo 1 + Dm shapes
- Capo 6 + Am shapes
Easiest keys on guitar
- 1 semitone up
- 4 semitones down · capo 4 keeps the original pitch
The song's harmonic story
Starting on B, the song gives away its key from the very first bar. The chords that keep coming back are B, Abm, Ebm, Db; read them as IV–ii–vi–V in Gb or VI–iv–i–VII in Ebm. No chord leaves the shared scale, so a single pentatonic shape works over the whole song. Keep an ear on Abm → Ebm (ii → vi in Gb, iv → i in Ebm): minor plagal — deep and melancholic. Ending on Db, the song seals Gb as home.
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.
Katy Perry - Last Friday Night Chords on Guitar, Ukulele and Piano
Hover over or tap a chord in the lyrics for its shapes, its degree in both keys and a listen button. Here you have every chord of the song side by side.
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