Ives' Fourth with a quarter-tone piano? Where does this come from? I know that there are some microtonal string slides in there, but I've never heard it done with a re-tuned piano. For quarter-tone pianos in an orchestra I would suggest Alois Haba's opera "Mother." When I produced my recordings I didn't include anything microtonal. Aaron J. Rabushka [log in to unmask] http://www.cowtown.net/users/arabushk/