Well my copy of the
Piazolla piece (
Retrato de Alfredo Gobbi) finally arrived, and I love it, and am going to memorize it and add it to my repertoire. Yes
iona - it was worth the wait.
I am sorry I am not going to be much help with suggestions for most of the the big LH chords. I can comfortably stretch all of them except those in measures 14 and 69 - which no-one could manage with one hand - not even Rubinstein, or Rachmaninov, or Alfredo Gobbi.
There are three ways to handle those. You can either:
1. Take the octave with the LH and make a LH leap up to the other chord, or
2. Take the middle chord with the RH and make a RH Leap up to the melody, or
3. Make the whole thing a big LH Arpeggio
Whatever way you choose, it needs the pedal to hold the harmony, so the melody gets smudged.
I prefer method 2. Can I justify that with some logic? Well the sections are marked Rubato, and the first melody note in each of measures 13, 15, 68 and 70 is not at the start of the bar either, so treating it like this sounds quite natural. [One form of Rubato is to play the RH slightly behind the beat].
I think it sounds even better if the chord is briskly arpeggiated -> E-A-C#-D, with 1-2-3-5 but that might be taking too much of a liberty if you are presenting it as an exam piece.