Bibliographies & Reference Works

General

Oxford Music Online (access restricted to MCO-location)
Gives access to Grove Music Online and to The Oxford Dictionary of Music and The Oxford Companion to Music.

The Music-in-Print Series (access restricted to MCO-location)
Overview of printed music catalogued according to setting and genre: Sacred choral music, Secular choral music, Orchestral music, etc.). Music publisher addresses included.

IDNV (CD-ROM, (access restricted to MCO-location))
Internationale Datenbank für Noten und Verlagsartikel.

Bonner Katalog (CD-ROM, (access restricted to MCO-location))

Genres

Choralnet Repertoire Site
Choral music site. Search functions: composer, choral setting, accompaniment, text and theme.
Musica International
Choral music site, with references to more than 160.000 titles
Opérette, Théâtre musical
Internetpage l'Académie Nationale de l'Opérette (ANAO) Paris. Operetta encyclopedia. Search function: composer and title.
Internet Broadway Database
Information concerning Broadway productions.

Composers and poets (lyricists)

Dutch Music Encyclopedia
The Dutch Music Encyclopedia of Music Center the Netherlands (MCN)
Muzikaal Nederland 1850-1910
Bio-bibliographical dictionary of Dutch composers and musicians, compiled by J.H. Letzer
Classical Composers Database
Komponisten der Gegenwart
Digital version of the reference work of the German Composers Association. 
The living composers project
New Music Links (by Thomas Moore)
Information concerning, mainly, contemporary composers.
Stichting Vrouw en Muziek
Information concerning (Dutch) women composers.
The Lied and Song Texts Page
Complete lieder texts. Search functions: composer, poet, title and first line.
Poets' Corner
Complete texts of English poets. Search functions: first line, title, poet and subject matter.
Poésie française
Complete texts of French poets.
Lirama
Complete texts of more than a quarter of a million songs. Also in Dutch.