I learned a scale with double-sharps just the other day. Let me see...
Key of A# Minor. From Scales and Arpeggios for Keyboard by Palmer,
Manus and Lethco, page 52:
A# Harmonic Minor:
A# B# C# D# E F# G## A#
A# Melodic Minor, Ascending:
A# B# C# D# E F## G## A#
Now, F## is G natural, and G## is A natural. But my understanding for
the odd double-sharp and double-flat notation is that convention calls
for every letter - ABCDEFG - to be present in every key, with enough
sharps or flats added to make the intervals right. Without that
convention, the harmonic minor would be:
A# C C# D# E F# A A#
So you see, C and A would occur twice, but with different accidentals.
That would probably be confusing in an actual score if it was notated
that way.
--
Michael David Crawford
[EMAIL PROTECTED]
http://www.geometricvisions.com/ <-- Creative Commons Sheet Music
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