I don't view this as a question of right/wrong, just some interesting choices to mess around with in working on the piece.
As I stated earlier Zink ,I believe it is about choices as to what alternative fingerings to use for the same notes in a piece.Whether they are right or wrong depends on the perception of the indervidual player interpreting the piece within his or her capabilities.Now to adress what I interpret as the intention of the composer with regards to the whole suite .The suite is based on deep religious beliefs ,according to wikipedia .I see this suite on par with the last
Supper by Leonardo De Vinci or The Chiconne from Bachs BWV 1004 where Bach pays hommage to his deceased wife,
or in the case of De Vinci, where every person placed around the table is seated with specific intent by the Artist .Therefore there are specific textures chosen by these repected painters and composers ie. not different shades of grey but specific shades or harmonies .
For example if one looks at bar 40 of the Prelude saudade where there is that rather difficult F# sus arpeggio ,from my perspective,one could choose to play the F# on the 2nd string V position sacrificing the F# crotchet sustained over the open B .Or the playing the more difficult stretch in the written option ,which I believe was the composers intention from an effect or texture point of view.I think ease of playing is a secondary consideration when adressing this suit leaving little room for jamming about .No disrespect intended Zink ,I understand what you mean by messing about and I dont mean to come across as some ridged purist allowing no room for experimentation.All I am trying to convey is that these experimentations should not distort the intentions of the composer .I therefore believe that the first option of the Bm inversions at the end of the Allegro are well balanced not using the open B option regardless of how some Players of note may interpret otherwise.Here then Bar 40 of The Prelude to convey my perseption of an example what Barrios clealy intended.
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