I'm working on a chamber music piece and I want the cello to play a high Bb at the end. I want Bb5 (sits above treble clef). The tempo is slow and it doesn't need to compete in the orchestration, so quiet is ok. It comes from D4 (forth line treble clef). My choices are
- Just write the note and hope for the best.
- Write the note as a touch-4 harmonic, so written as Bb below middle C with a diamond note on the Eb above.
- Write the note as a touch-5 harmonic, bottom-line Eb with a diamond note on middle-line Bb.
What would be the most secure assuming a professional cellist?