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2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a polychlorinated dibenzo-p-dioxin (sometimes shortened, though inaccurately, to simply 'dioxin') [3] with the chemical formula C 12 H 4 Cl 4 O 2. Pure TCDD is a colorless solid with no distinguishable odor at room temperature.
The harmonic minor scale (or Aeolian ♮7 scale) is a musical scale derived from the natural minor scale, with the minor seventh degree raised by one semitone to a major seventh, [2] [3] [4] creating an augmented second between the sixth and seventh degrees.
A contrafact is a musical composition built using the chord progression of a pre-existing song, but with a new melody and arrangement.Typically the original tune's progression and song form will be reused but occasionally just a section will be reused in the new composition.
Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...
I–V–vi–IV chord progression in C: 4: Major I–IV– ♭ VII–IV: I–IV– ♭ VII–IV. 3: Mix. ii–V–I progression: ii–V–I: 3: Major ii–V–I with tritone substitution (♭ II7 instead of V7) ii– ♭ II –I: 3: Major ii-V-I with ♭ III + as dominant substitute: ii– ♭ III + –I: 3: Mix. vii o 7 /V–V–I (common in ...
The standard tuning, without the top E string attached. Alternative variants are easy from this tuning, but because several chords inherently omit the lowest string, it may leave some chords relatively thin or incomplete with the top string missing (the D chord, for instance, must be fretted 5-4-3-2-3 to include F#, the tone a major third above D).
By thinking of this blues progression in Roman numerals, a backup band or rhythm section could be instructed by a bandleader to play the chord progression in any key. For example, if the bandleader asked the band to play this chord progression in the key of B ♭ major, the chords would be B ♭-B ♭-B ♭-B ♭, E ♭-E ♭-B ♭-B ♭, F-E ...
A unique particularity of the minor chord is that this is the only chord of three notes in which the three notes have one harmonic – hearable and with a not too high row – in common (more or less exactly, depending on the tuning system used). This harmonic, common to the three notes, is situated 2 octaves above the high note of the chord.