Lifeline – Verse
Lifeline – Chorus
Lifeline – Bridge
Related Music Concepts
Inverted Chords
Using a different bass note to change a chord's sound
Half-Diminished Chords
A diminished triad with a minor seventh on top — softer than fully diminished
Seventh Chords
Adding one more note to the basic chords
Altered Chords
Altered (raised or lowered) notes create tension and complexity in chords
Borrowed Chords
Using chords from parallel modes for contrast and emotion
Bassline Motion
How much the bass moves stepwise between chord roots
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
Secondary Chords
Chords that temporarily shift the harmonic center
Suspended Chords
A chord with built in tension and release
Song Stats
●
Key
A Major
Tempo
80 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
E4 – F#5
Mood
Complex, Unexpected, Mellow, Bright
Most Used Chord
I
Chord Complexity
91
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
75
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
56
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
82
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
83 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
E4 – E5
Mood
Complex, Unexpected, Bright
Most Used Chord
I(add6)
Chord Complexity
83
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
45
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
95
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
A Major
Tempo
80 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
F#4 – A5
Mood
Tense, Complex, Unexpected, Mellow, Bright
Most Used Chord
IV
Chord Complexity
87
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
69
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
66
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
77
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
80 BPM
Meter
4/4
Genre
Pop, Rock
Melody Range
E4 – A5
Mood
Complex, Unexpected, Mellow, Bright
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
66
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
48
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
88
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 Lifeline
About the Key
A Major
It is the 4th most popular key among Major keys and the 4th 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 |
|---|---|---|
| Verse |
I
iii43
vi
iv°7(lyd)
IV7
I6
vi42(b5)
|
No other theorytabs with this progression |
| Chorus |
I7add6
IV7
|
|
| Bridge |
IV7
V42sus4
iii7
V7sus4/ii
ii7
iii7
♭IV7
|
|
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.
E4 – A5
Melody range across 17 semitones
0.53 beats/note
Across 90.0 beats of melody
Stepwise Motion
Jumpiness
Repeaty
95%
Diatonic
Percentage of notes within the song's key.
76%
Chord Tones
Percentage of notes that fall on a chord tone of the underlying harmony.
Mixed
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
88
Measures how diverse and sophisticated the chord vocabulary is in this song.
Percentile: 88/100 — above average
Melodic Complexity
66
Measures the range, intervallic variety, and rhythmic complexity of the melody.
Percentile: 66/100 — above average
Chord-Melody Tension
48
Measures how much the melody notes clash or harmonize with the underlying chords.
Percentile: 48/100 — below average
Chord Prog. Novelty
88
Measures how unusual or unexpected the chord progressions are compared to common patterns.
Percentile: 88/100 — above average
Chord-Bass Melody
87
Measures the melodic movement of the bass notes across chord changes.
Percentile: 87/100 — above average
Song Data
Metrics Radar Chart
LifelineAverage 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.
