Un Sospiro as a left hand etude?!?!

[boxjuice]

I know with the arpeggios you're supposed to switch between hands and play the melodies in alternating hands, but is it possible, nay, practical to play the arpeggios with just the left hand while the right hand plays the melodies?

[piulento]

If you get to a level where you can play the arpeggios with the left hand alone, you don't need to be playing etudes as technical exercises.

[ronde_des_sylphes]

^Seconded.

It is amazing how much of the study can be arranged for LH only without sacrificing too much texture. The net result, whilst interesting, is bloody difficult though and will necessitate a reduction in tempo in places. Or maybe that's just my crappy left hand scales in sixths.. 

[ted]

It amazes me that you can do that, Andrew. I couldn't lean far enough to the right to play the tops of those cadenzas with my left hand at all, never mind up to speed in double notes.

[lontano]

I know with the arpeggios you're supposed to switch between hands and play the melodies in alternating hands, but is it possible, nay, practical to play the arpeggios with just the left hand while the right hand plays the melodies? Here is a great video tutorial on how to approach Un Sospirio.
Watch and learn.