[Harp-L] Harp Key for Unusual Sequence

[Dave Shannon <daveshannon@xxxxxxx>]

I have a student who wants to figure out a solo over the following eight-bar sequence: 

D - A - Bm - G - D - A - Em - G

He's been using a D (diatonic) harp, which I think works really well, with the chords (G apart) available modally. I figure a G harp would sound good, too. What suggestions would you guys and gals out there make and why?

Thanks

Dave Shannon