Re: Descending aug and dim intervals

<vilen@[EMAIL PROTECTED]
> wrote in message 
news:872ead1f-65fd-4ef7-800b-cf4cf9d20bc2@[EMAIL PROTECTED]
> In these examples intervals dim7 and aug6 are used. But interval aug6
> is absent in major and   all minor scales.

That's ok - I wasn't playing major and minor scales.    Nor does music 
consist only of major and minor scales.

> Besides interval dim7 is
> possible only on 7th degree of minor scale.

No.  It is possible all over the place.    Eg: play a C7 chord and then 
change the C to a C# and you have C#-Bb: a diminished 7th.

> Thus this "rich"structure  of intervals allows arbitrary accidentals .

No surprises there then.   People have been doing itfor a long time.   Did

you want to forbid tem?

>In this case: how can one
> mean the interval between Gb and A# or the interval between F# and
> Ab ? The former interval is 2th and includes 4 semitones

A doubly augmented 2nd.

> and latter interval is 3th and includes 2 semitones.

A diminished 3rd.

These intervals may not be completely commonplace but they are well
defined 
and have the above names.

Dave
-- 
David Webber
Author of 'Mozart the Music Processor'
http://www.mozart.co.uk
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