I know there are a few cellists (and those who write for cellists) on here, so I was wondering how to write a passage that goes all over the place... I recall a composer saying that nobody writes in the tenor clef anymore and that he just flipped straight from bass to treble, so with that as starting point, my gut says to write in whichever clef requires the fewest leger lines, within reason to avoid excessive flip-flopping. So in the following made-up example
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I go to the treble clef when the high G would require more leger lines in the bass clef than the low G would in the treble clef... but on the way down I flip back to bass early to avoid a mid-bar clef change. Sound reasonable?