I am not massively into music these days to be honest (although I play piano myself). But my tastes are really quite varied. Being quite old I like listening to old stuff from e.g. Pink Floyd, Supertramp, Steely Dan, Dire Straits, Phil Collins etc. Also more poppy old stuff - Talk Talk, Simply Red, Elton John, Madonna, Howard Jones, The Christians, INXS, Crowded House, Oasis, Michael Jackson, Keane. Female vocalists I like too - Nora Jones, Lisa Loeb, Stacey Kent, Sarah McClachlan, Eva Cassidy, Joni Mitchel, Carol King. Male vocals - George Michael had an amazing voice and wrote some good stuff. Ditto Michael Buble but he is a bit too much of a crooner really. James Morrison and Jamie Cullom both have great voices. Newton Fawkner ditto. I like some electro-pop such as Yelo, for example. I'm into jazz too - Oscar Peterson, Errol Garner, Grover Washington, Ray Charles. And also quite a lot of classical too, when I am in the mood. Rachmaninov 2nd Symphony is a favourite, Saint-Sains Organ sympony, ditto. Beethoven's 6th. There's lots.
I think a common theme is that I like music and musicians who are technically excellent. As epitomised by Steely Dan & Donald Fagen perhaps.