So i'd just tie until the repeat of the note then tie that until the end of the tie if that makes sense.
I don't know for what combination of instruments Piazzolla originally composed this piece, but you could for example imagine a violin playing the melody while an accordion plays the accompaniment.
Neither of these arrangements lies easily for the piano.
They are, quite honestly, way too hard for somebody who has been learning for two months. I would look for a simpler arrangement, or maybe find a backing track to which you could play the melody.
I’ve been playing only the easier version and simplified it by not playing any chords, playing the same melody with both hands (different octaves), and sometimes use a drum track for the rhythm. Doing this, I’m able to manage the first 16 bars reasonably well at moderate speed (that’s before getting to the tied notes).
you are playing the melody only with both hands?
Yes. Do you think I shouldn't be doing that?
Thanks dcstudio for the explanation. Playing different notes of different durations with different hands is what I’m finding most difficult, which is probably commonplace among early beginners. I practice this in exercises and simple pieces, but following your advice will introduce it to Libertango. Readers of this thread should be aware that Libertango (and Ravel’s infamous Bolero) are the only non-beginner “aspirational” arrangements I’m attempting, which together occupy no more than 10% of my practice time. Bolero has been limited to the right hand, but as that becomes sufficiently proficient playing the medley I’ll introduce a base line of single notes and eventually chords and that relentless drum track.