Heian Alien – Intro
Heian Alien – Verse
Heian Alien – Pre-Chorus
Heian Alien – Chorus
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
Suspended Chords
A chord with built in tension and release
Borrowed Chords
Using chords from parallel modes for contrast and emotion
Chord Progression Novelty
How unusual the chord sequence is compared to other songs
Bassline Motion
How much the bass moves stepwise between chord roots
Chord-Melody Tension
How much the melody clashes with the underlying chords
Song Stats
●
Key
D Minor
Tempo
172 BPM
Meter
4/4
Genre
Video Game
Melody Range
D4 – A5
Mood
Complex, Unexpected, Upbeat, Moody
Most Used Chord
vosus4
Chord Complexity
99
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
81
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
58
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
98
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
171 BPM
Meter
4/4
Genre
Video Game
Melody Range
D5 – C6
Mood
Tense, Complex, Unexpected, Upbeat, Moody
Most Used Chord
i
Chord Complexity
99
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
96
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
98
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
89
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
173 BPM
Meter
4/4
Genre
Video Game
Melody Range
A4 – F6
Mood
Tense, Upbeat, Moody
Most Used Chord
VII
Chord Complexity
40
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
48
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
63
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
41
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.
Concepts
Song Stats
●
Key
B Minor
Tempo
172 BPM
Meter
4/4
Genre
Video Game
Melody Range
D4 – F#5
Mood
Tense, Upbeat, Moody
Most Used Chord
i
Chord Complexity
64
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
21
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
90
Chord-Melody Tension: Quantifies how often melody notes fall outside the current chord, producing dissonance that creates a sense of instability.
Chord Prog. Novelty
50
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
172 BPM
Meter
4/4
Genre
Video Game
Melody Range
D4 – F6
Mood
Tense, Complex, Unexpected, Upbeat, Moody
Most Used Chord
vosus4
Chord Complexity
95
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
79
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
90
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.
About Heian Alien
About the Key
D Minor
It is the 4th most popular key among Minor keys and the 10th most popular among all keys. Minor keys, along with major keys, are a common choice for popular music.
i iv VI
Most Important Chords
The three most important chords, built off the 1st, 4th and 5th scale degrees are all minor chords (D minor, G minor, and A minor).
D Minor Cheat Sheet
Popular chords, progressions, downloadable MIDI files and more
About the Chord Progressions
| Section | Progression | Songs with this progression |
|---|---|---|
| Intro |
isus4
V43sus4
v43sus4
V43sus4
|
No other theorytabs with this progression |
| Verse |
i
ii°
ii(dor)
III
i
III
ii(dor)
|
No other theorytabs with this progression |
| Pre-Chorus |
VI
VII
i
VII6
|
|
| Chorus |
i
v6
IV6(dor)
VI
VII
|
|
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.
D4 – F6
Melody range across 27 semitones
0.78 beats/note
Across 112.0 beats of melody
Stepwise Motion
Jumpiness
Repeaty
92%
Diatonic
Percentage of notes within the song's key.
50%
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
95
Measures how diverse and sophisticated the chord vocabulary is in this song.
Percentile: 95/100 — above average
Melodic Complexity
79
Measures the range, intervallic variety, and rhythmic complexity of the melody.
Percentile: 79/100 — above average
Chord-Melody Tension
90
Measures how much the melody notes clash or harmonize with the underlying chords.
Percentile: 90/100 — above average
Chord Prog. Novelty
77
Measures how unusual or unexpected the chord progressions are compared to common patterns.
Percentile: 77/100 — above average
Chord-Bass Melody
98
Measures the melodic movement of the bass notes across chord changes.
Percentile: 98/100 — above average
Song Data
Metrics Radar Chart
Heian AlienAverage 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.
