Joined: 16 Aug 2008 Brazil Karma: 2
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the 1st, 4th and 5th degree of a scale are the primary triads. most popular music is based off these. the 2nd, 6th and 3rd have all but one tone in common with the 4th, 1st and 5th respectively. these are the secondary triads. they can be substituted for one another with very little variation in the actual sound. for example, try playing, C, E, G. then try play, Am, E G. they sound almost the same - because C and Am are the 1st and 6th of C major.
so what you have is 1 2 5 4 5. the 2 is ALMOST a 4; your melody and harmony sound very, very little different from the standard 1 4 5, except in this case, its 1 4 5 4 5. very basic; except you go to the 7th degree of the scale before each 5. now, because that first 4 is actually a 2, that sets you up for a very smooth transition to virtually any point of the scale; meaning, the 7th, a difficult degree to gracefully work with, can be easily dealt with, if you use the possibilities the secondary triads afford you. you already have a 2, now let the melody spring off of that, and meet the 7th in midair.
if you just use that normal 1 4 5 harmonized melody, it will work, but without any grace or real beauty. it'd be cloddy. using the secondary triads will let you really bring out the depth of the 7th degree, and it's various dissonances can be easily turned into a very piquant handful of resolutions. |