In this example, Einojuhani Rautavaara sometimes uses flat and sometimes uses sharp in some chords.
Once it's atonal music, what're the rules for sharps and flats?
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1As far as I can tell, each composer uses his/her own rules. – Your Uncle Bob Aug 13 at 0:29
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1Not true, uncle bob. – jjmusicnotes Aug 13 at 2:26
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3It's also worth thinking about whether or not this is 'truly atonal'. It doesn't sound like twelve-tone serialism. While it's not centred on a standard key it is relatively consonant. It's using chords which will tend towards a tonal centre or implied root note. It's possible the sharp/flat decision is based on 'spelling' the most coherent chords. – AJFaraday Aug 13 at 9:43
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1@jjmusicnotes If the rules you put forward are indeed a kind of standard, and not just common sense and personal preference, then a few examples would give your answer more weight. – Your Uncle Bob Aug 13 at 13:23
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1The "rules" for the strict note-naming so far as theories of harmony go are one thing. The rules for marking the parts to be played are laid out pretty well in jjmusicnotes' answer. – Carl Witthoft Aug 13 at 14:22
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Fair question. Think about these things:
1.) Context (lots of sharps / flats already? Which would simplify the music?)
2.) The direction (sharps = up / flats = down)
3.) The instrument (strings more comfortable reading sharps / winds more comfortable with flats)
4.) Writing intervals the way they sound (does that really need to be "C-D#" or would "C-Eb" make more sense?)
5.) Voice-leading (this is part of "context" from above - what makes the most sense voice-leading wise? Atonality and functional harmony can coexist; just because your chords have functional voice-leading does not mean that they can't exist within an atonal framework.)
Make the decisions that make the most sense. The more you can simplify the music, the better.
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1Thanks, and as I said above, there are other good arguments here: youngcomposers.com/t20211/accidentals-in-an-atonal-piece. If you want to help the community, could you add some of these arguments on your answer? – Rogério Dec Aug 13 at 2:37
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