I am a pianist and a tenor vocalist, I am so glad there is a place to talk about this stuff, my lowest note is D3 mainly, but sometimes I can go to D-flat3 or C-sharp3, and I can go all the way up to an A6 that is for vocals, I like they key signature of E-flat I hate sharps, I like flats a lot more then sharps, I kinda just picked up the piano last year and ran with it.