What is the hardest instrument to learn how to play?

I think the saxophone is one of the hardest instruments to play. Not only because of all the different air holes you need to learn how to cover, but also the amount of breath and breathing control required.

by Bryony Harrison

The Violin, has always seemed to be quite difficult and still is.
One has to have natural talent, to master it.

by jonaja

I'm guessing, but I would think that any string instrument that is played with a bow would be listed as the hardest instruments to learn. The strings are pulled so tight, and far away from the fret board, both hands need to be doing two separate actions at two different speeds, it just seem like it would be really hard to me.

by DamienR

The guitar at first

by Justine Crowley