Russ, once again, is it the singer or the song? Ton of great Elvis songs... but you don't have to do them anything LIKE Elvis!

You maybe need to step back from your distaste of certain singers, and try to listen to strictly the song. Many great musicians do... and the result is great performances of songs that perhaps you wouldn't have thought twice about doing. Rearrange it, twist it inside and out, reversion it, make it YOURS, not Elvis's, or Buffett's, and you end up pleasing not only yourself, but most of the people that bug you to do an Elvis tune, or some Jimmy! You'll get the odd one who wants it just like Elvis, but most will give you a lot of leeway. And, let's face it, if you do Bird, or Monk, do you try to do them JUST like the original?

I doubt it.

Chase the song, not the singer...
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An arranger is just a tool. What matters is what you build with it..!