I hope someone remember that the year 2006 is not only another Mozart’s year, but it is also 100 years from the birth of russian composer Dmitrij Šostakovič (also written Shostakovich or Schostakowitsch, from the cyrillic Дмитрий Дмитриевич Шостакович, born in San Petersburg, September 25, 1906 – dead in Moscow, 1975).
Here at the International Music Score Library Project, you can download several scores.
Here, from the 24 Preludes & Fugues op. 87, you can listen to Prelude and Fugue num. 1 in C, with the fugue on he white keys only.