Re: Bach picking technique and problem chord.
I like to start with DUD/UDU for consecutive groups of 3's - that's what you see most in the 18th-century tutors like Leone and Denis. OTOH, this is not mandolin music; when you adapt from violin or cello it's always a question how much to borrow from classical mandolin technique. My sense is that any orthodoxy about how Bach "should" be interpreted needs to be reexamined - most often I see players using DUDU alternate picking, where applying other picking techniques can extend the tonal palette of mandolin.
As to the difficult voicing of the A7 chord, keep in mind these chords were not intended to be played all at once, but rather rolled across with the bow. So approaching them as a sustained chord doesn't get at the composer's intent any more than revoicing to an easier fingering - both are mandolin-centric solutions so IMHO there's no one best way of doing it. Finding solutions - balancing the tradeoffs and deciding what sounds best - is a big part of the fun of this music!
Exploring Classical Mandolin (Berklee Press, 2015)
Progressive Melodies for Mandocello (KDP, 2019) (2nd ed. 2022)
New Solos for Classical Mandolin (Hal Leonard Press, 2020)
2021 guest artist, mandocello: Classical Mandolin Society of America
Bookmarks