Music theory

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http://www.teoria.com/tutorials/hf/6aum.php We will start by transforming the iv degree chord of the A minor key into an augmented sixth chord: The chord receives the name of Augmented Sixth chord because of the augmented sixth interval between the bass and the chromatically raised note.

Harmonic Functions - Augmented Sixths

Music Notation Software. Free Program to Write Score.

A simple and intuitive way to write musical notation, Crescendo allows you to create, save and print your music compositions on your computer. The wide array of notation symbols, time and key signatures, and text, all on a free-form layout, give you the most control over your music arrangements. This program is perfect for composing original songs, music, scores and soundtracks, or you can try it with TwelveKeys music transcription software to transcribe music recordings and notate arrangements of your favorite music. http://www.nch.com.au/notation/index.html

Circle of fifths - Wikipedia, the free encyclopedia

Nikolay Diletsky 's circle of fifths in Idea grammatiki musikiyskoy (Moscow, 1679) In music theory , the circle of fifths (or circle of fourths ) shows the relationships among the 12 tones of the chromatic scale , their corresponding key signatures , and the associated major and minor keys. More specifically, it is a geometrical representation of relationships among the 12 pitch classes of the chromatic scale in pitch class space . [ edit ] Definition Since the term 'fifth' defines an interval or mathematical ratio which is the closest and most consonant non-octave interval, then the circle of fifths is a circle of closely related pitches or key tonalities. http://en.wikipedia.org/wiki/Circle_of_fifths
http://www.ethanhein.com/wp/2010/scales-and-emotions/

Ethan Hein's Blog › Scales and emotions

Following up and expanding on a post about learning music theory with Auto-tune .

Writing Original And Interesting Chord Progressions. Part I | Lessons @ Ultimate-Guitar.Com

Allow me start this lesson by saying that I'm not much of a guitarist. http://www.ultimate-guitar.com/lessons/songwriting__lyrics/writing_original_and_interesting_chord_progressions_part_i.html

Music Theory For Songwriters

Along the way, most songwriters have some questions. http://chordmaps.com/