Central catalogue is disposed on "Music Library" site:   <<< main page

Johann Sebastian Bach music
J.S.Bach. "Orgelbuchlein" (midi)
Joseph Haydn music
V.A.Mozart music (all piano sonates, Concerts, Requiem etc.)
Frederic Chopin piano music
Peter Tchaikovsky music
Alexander Skryabin (all piano sonates, preludes, poems)
G.Verdi. "Requiem" for soloists, choir and orchestra (score)
Dmitri Shostakovich music
200 ukrainian folk songs
Edvard Grieg piano works
Old russian romances (for voice with piano)
French clavesin music
"Ludus tonalis" of Paul Hindemith (scores and mp3)
Orchestral works of Anton Vebern

K.F.E.Bach. Lifeway of one of the the J.S.Bach sons.
Several examples (real audio) from his music.