There's another "Dorian Tuned Alternative" that I find very versatile: I use a 1/2 valved CX-12 retuned this-a-way: Blow: A C E G A Draw: B D F# A B No Dom 7's, but big Min 7/Maj 6th chords, some triads, lotsa partials, nice draw bends. Fun. Has become my most used harp. -Ed Coogan Gainesville, FL.