Okay, imagine you get offered the chance to learn one skill instantly, say you rub a magic lamp and out pops a genie, or you do something for a wizard and he helps you?

For me it would be to play the Violin at a perfect level.

I got one for christmas and it sounds like i'm strangling a cat. Even my kitten ran away from it!

So, to reiterate:

Instant skill, what would it be?