Seventh chord an augmented fifth, and an augmented seventh (i.e., a sequence of 3 major thirds, such as C–E–G–B), is a rarely used tertian seventh chord. The reason is that the augmented seventh interval is enharmonically equivalent to one entire octave (in equal temperament, 3 major thirds = 12 semitones = 1 octave) and is hence perfectly consonant with the chord root. The seven commonly used chords are: Seventh chords can also be constructed using augmented or diminished thirds. These chords are not tertian and can be used in non-tertian harmony. There are many (mathematically, 64) chords that can be built, however,
How Many More Years How Many More Years "How Many More Years" is a blues song written and originally recorded by Howlin' Wolf (born Chester Burnett) in July 1951. Recorded at the Memphis Recording Service – which later became the Sun Studio – it was released by Chess Records and reached no.4 on the "Billboard" R&B chart. Musician and record producer T-Bone Burnett has described "How Many More Years" as "in some ways... the first rock’n’roll song...". It was a double-sided hit with "Moanin' at Midnight", which reached no.10 on the R&B chart. After military service, Chester Burnett performed as a blues singer and