A flat 7 (♭7) in music refers to the seventh note of a major scale lowered by a half-step (semitone), creating a bluesy or "soulful" sound, often found in dominant 7th chords (like B♭7 in C major) or the Mixolydian mode, used to add tension and color, especially in rock, blues, and jazz.
The 7th is the seventh note of the major scale. To flat a note means to lower it by one note (meaning one fret lower). Therefore a flat 7th means one note lower than the 7th.
Dominant 7th chords are made up of four notes: the first, third and fifth notes of a given scale - plus a flattened 7th note from that scale. A flat 7th is a half-step down from what would be a full seventh note.
The scariest piano chords rely on dissonance, tension, and instability, with top contenders being diminished chords, the unsettling minor major 7th (Hitchcock chord), tight note clusters, the dissonant tritone, and progressions like the C minor to A-flat minor used in movie themes for instant dread. Playing these with heavy sustain, slow arpeggiation, or in unsettling inversions builds maximum creepiness.
The mixolydian mode is identical to the major scale but with a flattened 7th step. The mixolydian mode has a funky, somewhat bluesy sound at the top of the scale.
The "forbidden chord" refers to the tritone, a dissonant musical interval of three whole tones (six semitones) considered unsettling and even evil in medieval times, earning it the Latin name diabolus in musica (devil in music). While historically discouraged by the Church for its harsh sound (an augmented fourth or diminished fifth), it became a powerful tool for tension and drama in classical music (Wagner) and a staple in modern genres like jazz, rock, and blues, used for its unique flavor.
In the key of C major, a ♭VII chord would be B♭ (B♭-D-F) or B♭7 (B♭-D-F-A♭) borrowed from the parallel minor scale of C minor. The ♭VII chord appears in chord progressions in many ways.
The "4 golden chords" refer to the I-V-vi-IV chord progression (e.g., C-G-Am-F in the key of C), a simple, powerful pattern used in hundreds, if not thousands, of popular songs across genres like pop, rock, and country, allowing beginners to play many hits by mastering just these fundamental chords, often simplified as C, G, Am, and F on piano or G, D, Em, C on guitar.
The 80/20 rule (or Pareto Principle) in piano practice means focusing your effort on the most challenging 20% of a piece or skill to achieve 80% of the results, rather than aimlessly playing through the whole thing. This involves identifying tricky passages (like difficult rhythms, scales, or dynamics) and spending most of your practice time (80%) on those specific, high-impact areas to improve faster and more efficiently.
Jimi Hendrix's famous chord is the Dominant Seventh Sharp Ninth (7#9), often called the "Hendrix Chord," known for its dissonant yet bluesy "sweet-and-sour" sound, prominently featured in "Purple Haze" and "Foxy Lady," creating tension by mixing major and minor thirds within a single chord. The classic E7#9 voicing uses fingers on the 7th fret (A string), 6th fret (D string), 7th fret (G string), and 8th fret (B string), often with the open low E string ringing out.
7th chord rules involve adding a note a seventh interval above the root of a triad, stacking thirds (root, 3rd, 5th, 7th) to build them, and understanding that the quality of the 7th (major, minor, diminished) changes the chord's sound and function, with the dominant 7th (major triad + minor 7th, like C7 or C-E-G-B♭) being crucial for resolution in progressions. Key rules focus on construction (stacked thirds), notation (e.g., maj7, m7, 7), and tendency tones (like the tritone in dominant 7ths that resolves).
Jimi Hendrix's "favorite chord" is widely considered the dominant 7th sharp 9th (7#9), famously known as the "Hendrix Chord," characterized by its tense, bluesy sound, often played as an E7#9 in songs like "Purple Haze" and "Foxy Lady," blending major and minor qualities with a sharp ninth. He used variations of this chord and thumb-over-the-neck techniques to add richness and movement, creating his signature sound.
Its researchers found that people who play music regularly have functionally and structurally different brains and that learning an instrument can increase a musician's IQ by as much as seven points, regardless of age.
So the reason for the 88 keys on the piano is to be treated as a ratio. The 88 keys means 8:8 keys (8 to 8 keys) anywhere on the piano will give you a way of finding root notes, chord bar- riers and the major and minor infludences on the piano. This will enable you to play piano and find chords straight away.
My Top 10 Favorite Sad Chord Progressions
Easy beginner piano songs
The famous four chords used in many pop song progressions are the I, V, vi and IV chords of a major key. The roman numerals represent the numbers of the major scale we begin a chord from (1, 5, 6, 4) so in C major this would be C, G, Amin, F or in G major it would be G, D, Emin, C.
The flat seven chord is formed by first determining the seventh note of the scale of the key in which you are writing your song. Lower this note by a half-step (also known as "flatting" the note) and you have the flat seven. For example, in the key of C, the flat seven would be a Bb chord.
C7 is a dominant 7th, which is built using a major chord, adding a flat 7 (or minor 7). Cmaj7 is a major chord with a major 7. Cmin7 is a minor chord with a minor 7. These chords sound very different from each other because of the changes in key (major or minor), or the changes in 7th.