It is important to remember that many of the great composers
were excellent pianists themselves. Chopin, Beethoven, Mozart, and
Liszt are among these. If you are asking about more current
pianists, try listening to the performances of Leif Ove Andsnes,
Martha Argerich, Daniel Barenboim, Murray Perahia, Maurizio
Pollini, and Arthur Rubinstein, among many others.