Lots come to mind- Fred Hersh Trio, Herbie Hancock, Benny Green, Jacky Terrasson, Ahmad Jamal- These are all piano players. And, yes Ahmad Jamal is still alive and still playing. If you want to be amazed by a 87 year old piano player, just search YouTube for his videos.
Can’t forget Bob James or Lee Ritenour. They were both part of a group called Fourplay which is worth checking out.
Vocals- Jane Monheit, Melody Gardot, Cassandra Wilson and Canadian vocalist Holly Cole who recently recorded a very good sounding album.
If you are looking for something demanding in terms of dynamics- Return of the Headhunters with Herbie Hancock.