@Ilona @Fiddlerman @ELCBK @ all other cello-parts-players -

Ilona is perfectly correct - finally ( !! ) got around to it - yes, the note in question in bar 18 is clearly out-of-normal range for cello.....

Basically, as I mentioned in my post above - as an individual player, your own, personal choice is fine.   It can be any of the possible, meaningful "choices" over "difficult" ( or in this case impossible ) to-play notes .   Exactly -(1)  take another voice (like viola or violin) and play THAT in your appropriate register - OR (2) which can be better - as suggested in previous post above - pick some other "accessible/playable" note that fits in with the harmonic structure JUST for that occasional note (i.e. "use a note, even an octave up on the cello part, that "belongs" to the arrangement)  then just continue with the part in the scored, normal register for the instrument.

Do any of the two suggestions above and - THAT WILL BE FINE !!!!  ( and sorry for not noticing this earlier, I'm usually on top of all of this... LOL)

yup, this is the baddy - the red note below...

@Katie L -

Err, I think you've got it right (from what you wrote) - but for absolute clarification  - here you are (Note: (1) the score below shows a "Piano" - that was just for click-track, it *IS* the Vln1 score, and (2), the original score probably does NOT have an "opening repeat" shown on bar 1 - even with it not explicitly shown on bar 1, the repeat shown in bar 32 makes the assumption that in this case, you return to the very start)

So you will play

Bars 1 through 32 inclusive, then bars 1 thru 30 inclusive, then bars 33 thru 37 (which of course is what the .mp3 audio-click-track does)

[ I think that's how you were interpreting it anyway ]