Ok, I'd better just put these down before I think it over past the deadline: 1. Debussy, Preludes for solo piano (if I am only allowed to vote for one of the two books then I'll vote for book II): Listening to a 20th century solo piano work? Then chances are you're hearing the genetic signature of at least part of at least one of these exquisite and profound miniatures. 2. Sibelius, Tapiola: exemplifies the total integration of musical material, as well as the "depiction" of a natural subject with all the humans taken out-- one of my favorite 20th century trends. 3. Bartok, Piano Concerto no. 2: Movements I and III are what I think of when I think of neo-classicism as a good thing, and in movement II we have a great example of the so-called "Night Music" which Bartok pretty much forged and is heard in so many later composers' work. 4. Schoenberg, Pierrot Lunaire: for the carnival-grotesque as high art-- a pervading and rewarding pleasure of our century-- and for the fact that almost all subsequent vocal works I like seem to remind me of this one way or another. Anybody know of a collection of this poet's works (Giraud, isn't it)? I've long wondered. 5. Mahler, Das Lied von der Erde: because all the good 20th century vocal works not covered by no. 4 above are covered by Das Lied. I'm not bothered by the fact that all 5 are pre-WWII, on the principle that only time can tell. The second half of the century still figures in, as the obvious influence there of these pieces helped me decide on them. Jon Lewis [log in to unmask]