A 12-bar blues is divided into three four-bar segments. A standard blues progression, or sequence of notes, typically features three chords based on the first (written as I), fourth (IV), and fifth (V) notes of an eight-note scale.
The twelve-bar blues or blues changes is one of the most prominent chord progressions in popular music. The blues progression has a distinctive form in lyrics, phrase, chord structure, and duration. In its basic form, it is predominantly based on the I, IV, and V chords of a key. The blues can be played in any key.
A standard blues progression generally consists of three chords that are usually, but not always, played in a major and rather than a minor key. In a 12-bar progression, each of those chords is assigned four bars of the progression (and that number may change depending on the song's structure).
Twelve-bar blues. The 12-bar blues or blues changes is one of the most prominent chord progressions in popular music. The blues progression has a distinctive form in lyrics, phrase, chord structure, and duration. In its basic form, it is predominantly based on the I-IV-V chords of a key.
The Blues scale consists of 6 different notes. They are the 5 notes of the minor pentatonic scale, plus one additional note. The note added is the diminished 5th (o5) measured from the scale tonic. The b3, b5 and b7 notes of the scale (for C Blues scale : Eb, Gb and Bb) are the so called blue notes of the scale.
W. C. Handy. William Christopher Handy (November 16, 1873 – March 28, 1958) was a composer and musician, known as the Father of the Blues. An African American, Handy was one of the most influential songwriters in the United States.
The type of rhythmic pulse used in basslines varies widely in different types of music. In swing jazz and jump blues, basslines are often created from a continuous sequence of quarter notes in a mostly scalar, stepwise or arpeggio-based part called a "walking bass line".
A seventh chord is a chord consisting of a triad plus a note forming an interval of a seventh above the chord's root. When not otherwise specified, a "seventh chord" usually means a dominant seventh chord: a major triad together with a minor seventh.
The blues has deep roots in American history, particularly African-American history. The blues originated on Southern plantations in the 19th Century. Its inventors were slaves, ex-slaves and the descendants of slaves—African-American sharecroppers who sang as they toiled in the cotton and vegetable fields.
In music theory, a dominant seventh chord, or major minor seventh chord, is a chord composed of a root, major third, perfect fifth, and minor seventh. It can be also viewed as a major triad with an additional minor seventh. The dominant seventh is found almost as often as the dominant triad.
In jazz and blues, a blue note (also "worried" note) is a note that—for expressive purposes—is sung or played at a slightly different pitch than standard. Typically the alteration is between a quartertone and a semitone, but this varies among performers and genres.
The riff, played by the entire band, interrupts or precedes a solo by a single improviser, "sending" them off on their way. The soloist then completes the rest of the chorus. A good example of a send-off riff comes in the middle of John D'earth's solo on "Midriff".
A bar or measure is used in writing music. Each bar usually has the same number of beats in it. Music that feels like 1-2-3-4-1-2-3-4 will be divided into bars with four beats worth of music in each bar. The bar line (or barline) is a vertical line written in the music which separates the bars.
Therefore, I think it is better to time your song; a 16-bar cut should be around 30–45 seconds (one minute is maximum) and a 32-bar cut should be around 1:15–1:30 (two minutes is maximum).
Most songs begin with some instrumental bars, which are typically followed by a verse, although some do start with a hook. Very few songs begin with rapping. Usually the beat plays for 4 or 8 bars before the rapper comes in. After the intro, most songs contain two to four verses of 16 to 32 bars each.
The bridge isn't usually very long because it's purpose is to bridge the hook to the following verse and offer a break from the predictable format of the verse followed by the hook. A bridge is typically 4 to 8 bars in length.
Here's some calculations: one measure lasts 60/BPM seconds, so at 120 BPM 16 bars is 8 seconds. Hope this helps (more). 16 bars at 120BPM would be 32 seconds(1 bar would = 2 seconds).
How many 8 counts can I use in my routine?
|Length||115 Bpm||145 Bpm|
Allegro moderato – close to, but not quite allegro (116–120 bpm) Allegro – fast, quickly, and bright (120–156 bpm) (molto allegro is slightly faster than allegro, but always in its range)
The hexatonic, or six-note, blues scale consists of the minor pentatonic scale plus the 𘁇th degree. A major feature of the blues scale is the use of blue notes; however, since blue notes are considered alternative inflections, a blues scale may be considered to not fit the traditional definition of a scale.