Sorry, chas... the better you get, the MORE you need.

Most of us are content to have a decent arranger back us up. Oscar, Harry, Elton, those guys require the finest players in the world to back them up..! Not one of them would even DREAM of playing out with an arranger

Oh, and don't even get me started about whether they would be fine with a PSR piano patch, or whether their contract stipulates a freshly tuned Steinway, or Baldwin, or Bluthner!

Even if they DO choose to play just the ONE sound, that one sound is at the highest level you can buy, accompanied by the best that money can buy...
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An arranger is just a tool. What matters is what you build with it..!