Violinists, cellists, etc.See, pianists have idiosyncracies, and there are certain sounds and expressions which are just more CONVENIENT to produce at the piano.Listening to other instruments we don't hear the same things, because of the physically different nature of the instrument, and it's interesting to take influence from them.Also, I feel listening to MIDIs does alot to tell us what a piece could sound like with no physical barriers.Some composers composed with the effect of piano writing completyely in mind, and some didn't, and didn't count on pianists applying their instrumental habits on the music.Of course the habits can be beautiful, but they shouldn't just be there for the sake of a habit
I'm not sure how much it helps just to listen to singers,
but to sing yourself is very valuable.
Now that I've gone back to playing more, I'm really amazed at how much more feeling I have for phrasing than I did before. I can't always achieve what I want technically, but I have it in my ear much better. If the piece is within my technical reach, I feel like I can really make the phrases sing.(Of course at the moment I don't have a teacher to tell me how awful I probably sound!)There's a wonderful scene in From Mao to Mozart -- you've all seen it, right? -- where Isaac Stern is giving a master class to a young violinist. She plays the opening of Beethoven's Spring Sonata completely flatly -- no expression at all. He has her sing the melody out loud and then play it again. What a magical difference the second time!I've tried doing that myself -- sing a phrase out loud, then play it -- but it takes a lot of time and I didn't get very far with it. Does anybody do that on a regular basis?
Interesting; the only problem here is that by no means everything that you're trying to play is inherently "singable"...