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Music Fundamentals - Intervals

by: Nigel Rowles


Intervals are the fundamental building blocks of music allowing us to read and write music, and most importantly, to help us construct chords and harmonies. However words like major, minor, augmented, diminished, enharmonic and compound leave many people a bit confused, hopefully this article will throw some light on the subject.

The ‘distance’ between two notes is known as an interval. This is the difference in pitch between two notes. The size or amount of distance is measured numerically.

If we consider the C scale there are 8 notes; C D E F G A B C numbered from 1 through to 8. As an example the interval from C to G is a 5th as G is 5 notes above C. The interval from C to F is a 4th as F is 4 notes above C.

All intervals are measured from the first note of the scale. These intervals are given a name as well as a numeric value and in order of progression they are: C-D is a major 2nd, C-E is a major 3rd, C-F is a perfect 4th, C-G is a perfect 5th, C-A major 6th, C-B major 7 and finally C-C is a perfect octave.

The intervals that are perfect are so called because they have a certain purity about them that comes from the overtones and upper-partials that are contained within them (these will be explained in another article)

Intervals can be raised or lowered by a half-step/semitone. If a major interval is chromatically reduced by a half-step it becomes a minor interval e.g. C-E is a major 3rd, if it is lowered by a half-step (from C-Eb) the interval becomes a minor 3rd.

If a perfect interval is chromatically reduced by a half-step it becomes a diminished interval i.e. a perfect 4th lowered by a half-step becomes a diminished 4th.

If major or perfect intervals are raised by a half-step then they become an augmented interval i.e. a perfect 5th would become an augmented 5th.

Compound intervals are those that extend into the 2nd octave. C to D (in the next octave) is called either a major 9th or a compound major 2nd. C to F (next octave) is a perfect 11th or a compound perfect 4th.

Enharmonic intervals are those that differ in name but not pitch, for example C-G# is an augmented 5th and C-Ab is a minor 6th.

When intervals are inverted they reverse the relative position of the notes. C-G (perfect 5th) becomes G-C which is a perfect 4th, a 3rd would become a 6th. Perfect intervals when inverted remain perfect e.g. C-G being a perfect 5th would become a perfect 4th when inverted, a major becomes minor, minor becomes major, diminished becomes augmented and augmented becomes diminished.

These rules apply to all scales.


About The Author
Nigel Rowles 1986 Diploma in Music – Classical Guitar Major. I have been performing for 34 years either as solo instrumentalist, in duos, trios and in rock bands playing guitar or bass guitar. 10 years ago I started teaching guitar, bass and music theory which led me to independently writing, producing and publishing The Guitar Instruction, Musicianship & Reference Manual with DVD on Left & Right Hand Techniques. http://www.nofretguitarlessons.com.au

The Profiles of Some Famous Guitarists

by: Patrick Carpen

Most of us are quite enchanted by the magic of guitar. The mesmerizing tune and sweet tingling of the guitar strings have enamored many a man who has later moved on to become musical legends in their individual niche. There is a roster of famous and successful guitarists who have mastered this enigmatic art of music.

Amongst the many legendary stalwarts, Jimi Hendrix undoubtedly tops the list of profiles of famous guitarists. A genius in its truest sense, the legendary Hendrix was born in 1942. An American by birth, the maestro was a singer and lyricist, and is considered around the globe as one of the most influential and enigmatic personas in the ambit of rock music. One of the milestones in his career was his 1967 performance at the Monterey Pop Festival which raised him to instant fame in the United States and was followed by many accolades.

Besides earning a huge name and fame for himself through his forte as a great singer and musician, the legendary maestro also improvised the art of rock music in his own signature way, and he incorporated a number of innovations and techniques into the older forms of rock and jazz music. Quite recently, Hendrix was inducted into the USA's Rock and Roll Hall of Fame in 1992, and into the UK Music Hall of Fame in 2005.

The very meaning of rock music becomes insignificant without the mention of B. B. King, the master craftsman in the art of music. An ingenious guitarist and singer-cum-song writer in the American Blues, B.B. King was considered the Third Greatest Guitarist of All Time in the 2003 listing of Rolling Stone magazine.

The legendary musician started his journey in the world of music in 1946, and worked in the local R&B radio channel as a vocalist. However, soon after this he began recording under big names and became a prominent figure among the best musicians in the R&B music scene. Some of his greatest all time hits during this period include, "Whole Lotta Love," "Every Day I Have the Blues," "You Know I Love You," and "Please Accept My Love." Amidst his many achievements as a successful singer and composer, is included his most recent felicitation at the Three Deuces Building in Greenwood, Mississippi, for his maiden in radio broadcasting. Also, a grand memorial in the name of B. B. King Museum and Delta Interpretive Center is all set to be inaugurated on September 13, 2008, in Indianola, Mississippi.

Robert Johnson is another of the famous names in the world of guitar and its magic. Born on May 8, 1911, as Robert Leroy Johnson, the veteran guitarist was one of the brightest stars in the entire Delta Blues group. The period between 1936 and 1937 saw him in great guns when he claimed and proved his forte as a brilliant guitarist and lyricist, as well as an awesome singer. Often regarded as the "Grandfather of Rock-and-Roll," Robert Johnson is believed to have been a great influence in the world of rock music, inspiring many legends of the same genre, including Bob Dylan, The Allman Brothers Band, Jimi Hendrix, Led Zeppelin, The Black Keys, and many others. Eric Clapton, another legend of the same kind, has called Johnson "the most important blues musician who ever lived."


About The Author
Patrick Carpen is the designer, writer and owner of the website http://guitaring.infobay.ws/