both, of course, but i find this a very interestion question because aside from musical factor, i have an interest in the technical side of piano playing, even by itself, the wealth of possible pianistic figurations and sounds, and just the feel of playing the insturment, and thats why i chose piano as my passion, it didnt choose me, because i actually tried different instruments, i chose it...because it offered me everything i needed - particularly solo spontanious expression, thats what i feel the pianos biggest strength of all is.