Flute question- in the D harmonic minor arpeggio, is the C sharp?

That's because there's a difference between the D harmonic minor SCALE, and the arpeggio. There is really no such thing as a Dminor harmonic arpeggio, since arpeggios are basically a breakdown of the chord. What you would play is is D-F-A, with no C#. The scale WOULD include the C#, as C# is the sharpened 7th note that you would need to make it harmonic, as opposed to natural or melodic. So, the scale is D-E-F-G-A-Bb-C# and the arpeggio is D-F-A. The only arpeggio where you would include the C# is if you were playing Dmin +maj7 or something, D-F-A-C#, generally thats reserved to jazz or romantic style music.

The D Harmonic Minor scale is: D, E, F, G, A, Bb, C#, D. The 7th note is sharp, so in ALL scales of these, it is. Are you sure that the arpeggios aren't in D minor? It's kind of hard to see without the paper in front of me, but if it's not marked as sharp, I wouldn't see why it should be played otherwise.

I read this twice. The way you layer longer story-related prose is admirable, and something I have much trouble with. You make it seem effortless, natural, but all of us who write know the opposite is true. I often measure the effectiveness of a piece by the number of TD's........Jealousy rears it's green head. Kudos to you, Mr Carney.