SOME PERFORMANCE NOTES.
Technical anchors are important in guitar music. The position and the barré are the two traditional ones, but there is also the glide, much used by Tarrega and Llobet. It is difficult to jump quickly and smoothly from one end of the fingerboard to the other, but in slow pieces there is the option of the glide, and I have fingered this piece to contrive to place the third finger on the B sharps in bars 12 to 14 and in bar 74, for such glides, and I regard maintaining the third finger in place on the B sharps at the end bars 13 and 14 as important, even though it necessitates a large stretch to the adjacent C sharps.
I offer the ossia bar 58 which is closer to Debussy in that it restores his B flat, though my preferred choice is to omit the B flat as more technically idiomatic on the guitar. However, some players will find the open G in my preferred version difficult to play cleanly, and that is why I offered the ossia.
The use of the left hand thumb is achieving scattered but widespread usage, as a matter of common sense when it solves a problem. For example, I have observered both Fabio Zanon and Daniela Rossi use it in (different) Scarlatti pieces. It seems a natural solution in bar 74, and would be required irrespective of my penchant for the concurrent LH 3rd finger glide.[i][/i]