Classical augmented sixth chords

Italian 6th chord
a.) in first inversion
b.) flat 6 - 1 - #4
c.) double the tonic
d.) resolves to a 1 6/4 chord

German 6th chord
a.) flat 6 - 1 - 3 - #4
b.) resolve to a 1 6/4 or a V chord


French 6th chord
a.) flat 6 - 1 - 2 - #4


What are special about these chords ?

Why does classical composers use these chords?

How are there chords used ?

Hello Walters and thank you for your post.

I suggest you to find your answers online on Wikipedia:

http://www.wikipedia.org/

or by purchasing some counterpoint or composition book on Amazon.com:

http://www.amazon.com

Actually your questions require a lot of information to be delivered and it is outside the purpose of this forum. Anyway if any user want to add his/her advice, any idea is very welcome!

My best wishes,

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Virtual Sheet Music, Inc.
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