1) To me...fluent means being able to play the intermediate-advanced classical repertiore with ease, as well as having the co-reqiosite skills to back it up...taht would mean roughly a gr 10 or ARCT in piano performance.
2) on top of that, fluency involves an ability to play modern styles Jazz, and pop with ease and at sight, with convincing stylistic and rythmic nuances, with or without a musical group.
3) Fluency would indicate an ability to perform regularily without excessive stress,
4) Fluency would involve a theoretical background strong enough to form cohesive musical elements on demand in an improvisitory or group setting, in any style required.
5) Fluency would include the ability to take what has been learned and teach the concepts sensitively and thoughtfully.
6) Fluency would include an understanding of both acoustic and electronic instruments and the ability to use each to the extent of thier appropriateness
"Your list of the common extent of accomplishments," said Darcy, "has too much truth...I cannot boast of knowing more than half a dozen, in the whole range of my acquaintance , that are really accomplished."
....
"Then," observed Elizabeth, "you must comprehend a great deal in your idea of an accomplished woman."
"Yes; I do comprehend a gret deal in it."
"Oh! certainly," cried his faithful assistant, "no one can be really esteemed accomplished, who does not greatly surpass what is usually met with. A woman must have a thorough knowledge of music, singing, drawing, dancing, and the modern languages to deserve the word; and besides all this, she must possess a certain something in her air and manner of walking, the tone of her voice, her address and expressions, or the word will be but half deserved."
"All this she must possess," added Darcy, "and to all this she must yet add something more substantial, in the improvement of her mind by extensive reading."
"I am no longer surprised at your knowing
only six accomplished women. I rather wonder now at your knowing
any."
---Jane Austen,
Pride and Prejudice