If you could play any other instrument, what would it be and why?

I self taught and played the guitar during my university years when I was also recovering from an injury. It was really helpful therapy and probably saved my life.  I loved playing the calming renaissance music, and progresses to flamenco and Spanish music  and so pleased I could manage the 'Alhambra.' Then music dropped off completely when I started working.  I wish I could pick up the guitar again, but I think that would get in the way of my  piano progress. With piano,  I don't have fingernails for plucking the guitar.

But I did sing in a symphonic chorus for a few years and even performed in opera choruses - some of my happiest times. Again wish I could join a chorus again but my voice has changed and I couldn't hit some high notes anymore (:

But happy and satiesfied to keep working on the piano!

If I had to do it all over again, I’d play French Horn. Such a beautiful sound.

For me it would be oboe or bassoon. I played basson in high school & I love the tone of the double reed instruments. 
Or maybe guitar, because it is beautiful, versatile, and can be taken anywhere. 

I hope one day put my hands on a clarinet, that instrument rocks

I had a couple of years of oboe lessons during high school - love its rich and lyrical sound. I would love to play it again though I probably no longer have the lung capacity for it so ... thinking about a ukulele partly for the portability 

I’d love to sing and accompany myself with a cuatro (it’s similar to an ukulele), so I can take it places, as we know piano is not portable! But this is for popular music, not classical at all :) I was in the chorus at the conservatory too and really loved choral music!

If another instrument means an instrument I've never played but always rather wanted to.... then (if I had the time) it would be the 'cello. But that would have to include baroque 'cello. Why? Because I know almost nothing of string technique and would like to know something. Why the 'cello? Because of its delicious mellow sound, and the quality of the repertoire - most of all, of course, the works by Bach.

If another instrument means an instrument I've played in the past and know I ought to resurrect, then that's the recorder. A much-maligned instrument because so often used so badly in schools, it is in fact a glorious thing (in fact, a whole set of instruments) with a wealth of repertoire available.

If another instrument means an instrument other than the modern piano, then my only and profound wish would be to have more time for the virginals and clavichord, both of which I own and play but which tend to get crowded out by the organ. And I'd like to win the lottery so that I could buy a piano from every period - one for Mozart, one for Beethoven, one for Chopin. 

My father played trumpet in the big band days, and maybe I would like that, however, too tough on the lips.  Sorry, there is no competitive instrument for me.

    Thanks for asking.