1) I would like to be one of those guys who can really cut a rug swing dancing, like you see in one of those “World War II” movies with the soldiers at a USO dance. This body was built for a lot of things, but that is not one of them.
2) I’d like to be able to sing, to just pour my heart and soul into some heart rending song. Ok, I can do that now but the people cry because I am singing not because of how good it is.
3) I’d like to play the piano or guitar with reckless abandon, Jack the piano/guitar virtuoso sounds good to me.
In case you are wondering, the general theme here is that of expression. Each of the aforementioned is ultimately about expressing yourself.