We visited Red Piano last summer and it was awesome. So much of this has to do with the performer. We went there last week and the guy playing now is from Australia. Nothing wrong with that, except he kept saying to each request, "no, I don't know that one, don't know that one ... Oh here's an Australian song ..." He knew enough traditional stuff that you might expect at a piano bar, but it was pretty limited. We might go back tonight since the other option for piano bar is Sopranos in Maho. The current performer is super talented, but thinks she has a platform for her political views. Plus, she is very crude.
Love the no smoking policy at Red Piano! Best bet if you are a non-smoker - go to Red Piano Bar and request Australian songs. You will be in heaven!