24 Hours – Intro
24 Hours – Verse
24 Hours – Pre-Chorus
24 Hours – Chorus
24 Hours – Bridge
Related Music Concepts
Seventh Chords
Adding one more note to the basic chords
Suspended Chords
A chord with built in tension and release
Borrowed Chords
Using chords from parallel modes for contrast and emotion
Add Chords
A chord with an added tone that enriches its sound
Chord Progression Novelty
How unusual the chord sequence is compared to other songs
Inverted Chords
Using a different bass note to change a chord's sound
Bassline Motion
How much the bass moves stepwise between chord roots
Extended Chords
Stacking thirds beyond the 7th to create more complex sounds
Secondary Chords
Chords that temporarily shift the harmonic center
Song Stats
●
Key
A♭ Major
Tempo
84 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
Ab3 – Ab4
Mood
Smooth, Complex, Bright
Most Used Chord
IV
Chord Complexity
89
Chord Complexity: Tracks when a song goes beyond simple three-note chords—either by adding extra tones (like 7ths or add9s) or by borrowing notes from outside the key—creating richer, more sophisticated harmonies.
Melodic Complexity
4
Melodic Complexity: Reflects two factors: the use of notes outside the key and rhythmic syncopation, together capturing how intricate or surprising a melody feels.
Chord-Melody Tension
0
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
53
Chord Prog. Novelty: Measures how uncommon a song's chord changes are compared to others in the Hooktheory database, highlighting progressions that deviate from typical patterns.
Song Stats
●
Key
D Minor
Tempo
84 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
F#4 – A5
Mood
Complex, Unexpected, Moody
Most Used Chord
VIIsus2(add6)
Chord Complexity
90
Chord Complexity: Tracks when a song goes beyond simple three-note chords—either by adding extra tones (like 7ths or add9s) or by borrowing notes from outside the key—creating richer, more sophisticated harmonies.
Melodic Complexity
89
Melodic Complexity: Reflects two factors: the use of notes outside the key and rhythmic syncopation, together capturing how intricate or surprising a melody feels.
Chord-Melody Tension
53
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
93
Chord Prog. Novelty: Measures how uncommon a song's chord changes are compared to others in the Hooktheory database, highlighting progressions that deviate from typical patterns.
Song Stats
●
Key
E Minor
Tempo
84 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
D4 – A5
Mood
Unexpected, Moody
Most Used Chord
VI
Chord Complexity
52
Chord Complexity: Tracks when a song goes beyond simple three-note chords—either by adding extra tones (like 7ths or add9s) or by borrowing notes from outside the key—creating richer, more sophisticated harmonies.
Melodic Complexity
58
Melodic Complexity: Reflects two factors: the use of notes outside the key and rhythmic syncopation, together capturing how intricate or surprising a melody feels.
Chord-Melody Tension
28
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
66
Chord Prog. Novelty: Measures how uncommon a song's chord changes are compared to others in the Hooktheory database, highlighting progressions that deviate from typical patterns.
Song Stats
●
Key
E♭ Major
Tempo
84 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
G4 – F5
Mood
Complex, Unexpected, Bright
Most Used Chord
I
Chord Complexity
82
Chord Complexity: Tracks when a song goes beyond simple three-note chords—either by adding extra tones (like 7ths or add9s) or by borrowing notes from outside the key—creating richer, more sophisticated harmonies.
Melodic Complexity
88
Melodic Complexity: Reflects two factors: the use of notes outside the key and rhythmic syncopation, together capturing how intricate or surprising a melody feels.
Chord-Melody Tension
60
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
64
Chord Prog. Novelty: Measures how uncommon a song's chord changes are compared to others in the Hooktheory database, highlighting progressions that deviate from typical patterns.
Song Stats
●
Key
G Minor
Tempo
84 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
A3 – G5
Mood
Smooth, Complex, Unexpected, Moody
Most Used Chord
IV
Chord Complexity
88
Chord Complexity: Tracks when a song goes beyond simple three-note chords—either by adding extra tones (like 7ths or add9s) or by borrowing notes from outside the key—creating richer, more sophisticated harmonies.
Melodic Complexity
74
Melodic Complexity: Reflects two factors: the use of notes outside the key and rhythmic syncopation, together capturing how intricate or surprising a melody feels.
Chord-Melody Tension
17
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
67
Chord Prog. Novelty: Measures how uncommon a song's chord changes are compared to others in the Hooktheory database, highlighting progressions that deviate from typical patterns.
Song Stats
●
Tempo
84 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
Ab3 – A5
Mood
Complex, Unexpected, Bright
Most Used Chord
IV
Chord Complexity
84
Chord Complexity: Tracks when a song goes beyond simple three-note chords—either by adding extra tones (like 7ths or add9s) or by borrowing notes from outside the key—creating richer, more sophisticated harmonies.
Melodic Complexity
67
Melodic Complexity: Reflects two factors: the use of notes outside the key and rhythmic syncopation, together capturing how intricate or surprising a melody feels.
Chord-Melody Tension
25
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
73
Chord Prog. Novelty: Measures how uncommon a song's chord changes are compared to others in the Hooktheory database, highlighting progressions that deviate from typical patterns.
About 24 Hours
About the Key
A♭ Major
It is the least popular key among Major keys and the 21st most popular among all keys. Major keys, along with minor keys, are a common choice for popular songs.
I IV V
Most Important Chords
The three most important chords, built off the 1st, 4th and 5th scale degrees are all major chords (A♭ Major, D♭ Major, and E♭ Major).
A♭ Major Cheat Sheet
Popular chords, progressions, downloadable MIDI files and more
About the Chord Progressions
| Section | Progression | Songs with this progression |
|---|---|---|
| Intro |
IV
I
II7(lyd)
|
|
| Verse |
VIIsus2add6
VIadd9
VIIsus2add6
i
VIadd9
VII7(mix)
|
No other theorytabs with this progression |
| Pre-Chorus |
i
VI
|
|
| Chorus |
IV64
I7sus2sus4
|
|
| Bridge |
i
V(hmin)
IV(maj)
III
VII
|
No other theorytabs with this progression |
About the Melody
Melody data is compiled from all analyzed melody sections, so depending on how a user analyzed a song, "melody" might include instrumental notes.
Ab3 – A5
Melody range across 25 semitones
0.55 beats/note
Across 208.0 beats of melody
Stepwise Motion
Jumpiness
Repeaty
98%
Diatonic
Percentage of notes within the song's key.
73%
Chord Tones
Percentage of notes that fall on a chord tone of the underlying harmony.
Edgy
Consonance
How smoothly the melody blends with the harmony (0 = dissonant, 1 = consonant).
Loose
Syncopation
How often the melody emphasizes off-beats. Higher = more syncopated.
About the Metrics
Chord Complexity
Chord Complexity tracks when a song goes beyond simple three-note chords—either by adding extra tones (like 7ths or add9s) or by borrowing notes from outside the key—creating richer, more sophisticated harmonies.
Melodic Complexity
Melodic Complexity reflects two factors: the use of notes outside the key and rhythmic syncopation, together capturing how intricate or surprising a melody feels.
Chord-Melody Tension
Chord-Melody Tension quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Progression Novelty
Chord Progression Novelty measures how uncommon a song's chord changes are compared to others in the Hooktheory database, highlighting progressions that deviate from typical patterns.
Chord-Bass Melody
Chord–Bass Melody evaluates how smoothly the bass moves between chords, scoring higher when it travels step-wise, ascending or descending, instead of jumping directly between root position chords.
Hooktheory's metrics are calculated against the entire database of analyzed songs, where 50 is the "average song." Learn more about each of these metrics here.
Chord Complexity
84
Measures how diverse and sophisticated the chord vocabulary is in this song.
Percentile: 84/100 — above average
Melodic Complexity
67
Measures the range, intervallic variety, and rhythmic complexity of the melody.
Percentile: 67/100 — above average
Chord-Melody Tension
25
Measures how much the melody notes clash or harmonize with the underlying chords.
Percentile: 25/100 — below average
Chord Prog. Novelty
73
Measures how unusual or unexpected the chord progressions are compared to common patterns.
Percentile: 73/100 — above average
Chord-Bass Melody
66
Measures the melodic movement of the bass notes across chord changes.
Percentile: 66/100 — above average
Song Data
Metrics Radar Chart
24 HoursAverage Song
BPM Comparison
Melody Distribution
1
2
3
4
5
6
7
Melodic Intervals
Distribution of note-to-note jumps in semitones (negative = downward, positive = upward)
Note Durations
How long each note is held (in beats)
Syncopation
How many notes fall on each level of metric strength (0 = on-beat, higher = increasingly off-beat)
Level 0
Notes that fall on the downbeat — the strongest metric position in the measure.
Level 1
Notes on a secondary strong beat (e.g. beat 3 in 4/4) — still firmly on the grid.
Level 2
Notes on the remaining primary beats (2 and 4 in 4/4) — moderate metric weight.
Level 3
Notes on eighth-note offbeats — between the primary beats. Audibly syncopated.
