Piano in every sense
Sabine Liebner really takes her time with For Bunita Marcus (1985) -- of nine recordings listed, this is the only one that wouldn't fit on a single CD. Hence this coupling which brings together Feldman's last two piano pieces is remarkably spacious and, with its very quiet dynamic, works equally well as ambient music or an object of intense listening. There is a bit of noise in the latter parts of both works which was surely not intended by the composer (or the performer), which -- considering the connection and difference between Feldman and John Cage -- raises the question of whether it's part of the music or not. But you won't notice it unless your environment is extremely quiet.