isnt that always a problem....and one I see time and time again..people play the arranger sounds like a piano instead of the way the instrument should be played & sound.
As a kid in music class I would go to see the NY Philharmonic Orchestra and sit there with my eyes closed to pick out each instrument being played in songs and try to guess what they were.....even difficult ones like bassoon, Piccolo, Oboe, marimba, Glockenspiel, etc,......it's real good practice to do this even if you listen to recordings with closed eyes.....it will let you develop a sense of how the instrument should be played on the arranger KB so you can recreate it while playing a song.