READER FILTER: This post is for people who meet two conditions: a) they like Hanon very much and b) they don't have a problem with youtube piano teacher 'bachscholar' (Cory Hall). There are many anti-Hanon and anti-bachscholar threads on these forums so if you want to beeyotch, go to those threads and leave this one alone, ok?
Bachscholar is developing "Hanon the way Bach would have done it," which basically involves Hanon (that is, the famous first 31 exercises) in parallel sixths and tenths. Of course other people have done many of the exercises already for the major keys, but bachscholar is also putting it all into minor, using various choices of the melodic minor scale's 6th and 7th degrees, raising or lowering them to produce a pleasing, baroque-like sound.
He has completed his versions of Exercises 1 and 2 so far, and demonstrates them in the keys of C and Db major, plus the parallel minors Cm and C#m. He will most likely produce a book of some kind for sale if he decides the project is worth completing. See:
I am particularly interested in the minor versions, as you might be if you wish there was a nice ready-made way to do minor Hanon, especially in parallel sixths and tenths. (It will be interesting to see how bachscholar deals with the problem posed by exercises such as No. 5, which if played in sixths, result in Close Encounters of the Left and Right Fingers Kind. Perhaps that should be seen as a pianistic challenge which, if practiced once in a while, would improve dexterity, and reduce one's natural reluctance to encounter such situations. I've tried playing No. 5 in sixths, in C major and A harmonic minor, and to me it feels like something worth practicing.)
Sure, you can do your Hanon in ugly old harmonic minor, and I for one think that is worth fifteen or twenty minutes per week. The problem with Hanon in MELODIC minor is that there are no simple, hard-and-fast rules which would result in attractive-sounding parallel sixths and tenths versions. Each exercise has to be recomposed in order to make the least-ugly choices between raised or lowered 6th and 7th scale degrees. Just try it yourself!
I knocked up a number of minor versions (Nos. 3 to 15) based loosely on bachscholar's #1 and #2, but I have given it up; my results are mostly over-complicated, or not attractive, or both. Bachscholar is a trained pianist with a PhD, and I'm just a self-taught schmo, so I'm sure his versions will be much nicer.
It amuses me to imagine the following: Suppose that boring old Monsieur Hanon was a fabulously rich contemporary of Bach. Hanon brings his volume of exercises to the great master and offers him a big bag of thalers to set them in minor, in parallel sixths and tenths, "avec naturellement, Herr Bach, votre style si inimitable et fameux." Bach finds the exercises rather grim, but a contract is a contract, his wife is insisting the household needs yet another new coffee machine, and his troublesome eldest son Wilhelm Friedemann has got the clap again and needs expensive treatment. So he holds his nose and finishes this trivial project in less than an hour. Hanon is thrilled with the results.
[I probably would never have bothered with any of this if the phrase "I Cover the Hanonfront" hadn't popped into my head after a few beers one night =) ]