Alec,

You're fun! I wondered how long it would take for you to respond. (Laughing, as I write) Quick, I might add. You're reaching, my friend! It is purely a choice on ONE instance of whether the "F" is played an octave up or down. This has no baring on playing in any key other than the key of "F". If it helps, I promise not to change the pitch point in the future - just for you. You mention "voice" - Do you mean vocally? :-) Sorry, I couldn't resist. (LOL) I would use the symbols listed on the forum, if I knew how.