On 26/06/17 22:56, Peter Gentry wrote:
dak@lola:/usr/local/tmp/lilypond$ lilypond scheme-sandbox GNU LilyPond 2.19.59
Processing `/usr/local/share/lilypond/2.19.59/ly/scheme-sandbox.ly'
Parsing...
guile> (apply - (map ly:pitch-tones (list #{ eis #} #{ fes #})))
1/2
guile>
--
David Kastrup
A semi tone difference is indeed noticeable but surely there is no semitone
between e sharp and f flat?
It’s the same key on the piano! Where is the semitone?
Instead of enlightening me you simply reply with a superior and dismissive tone
which is uncalled for.
Two little points.
Firstly, please DON'T reply beneath someone else's signature. Okay,
you're probably using a broken email client (otherwise it wouldn't let
you), but it makes things *really* confusing, especially if a non-broken
client tries to "correct" things and makes it even worse, and
Secondly, if someone comes back at you like this, your immediate
reaction should be "hang on, is this a corner case" - that's a
programming term - it's a place where either reality or your assumptions
change - and it's an *extremely* common cause of errors because all too
often reality and assumptions don't change in exactly the same place! As
indeed, is exactly what happened here.
I "often" play in six flats, and am interested in pentatonic (ie all
black note) folk music, so it was instantly obvious to me what David was
talking about, although if you're not into that you might not notice
straight away. And why do people assume everyone plays the piano? My
piano skills are Grade 0, despite me being a pretty decent amateur
musician ...
Cheers,
Wol
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