Animated musicals

Animated musicals.
Yahoo directory.
.
Disney musicals.
Disney Online
.
Wikipedia, an extensive list of animated feature length films.
.
Snow White and the Seven Dwarfs

Musical Theatre Auditions

Broadway.com.
Current Broadway productions.
.
British musicals, music theatre

British musicals on film.
.
British music theatre of the 50's and 60's.
.
British Musical Theatre Index
.
British Theatre Guide
.
London Theatre Guide

Broadway theatre guide and tickets.
Absolute Broadway
.
Internet Broadway Database
BDB (Internet Broadway Database) archive is the official database for Broadway theatre information. IBDB provides records of productions from the beginnings of New York theatre until today. Details include pertinent people involved as well as interesting facts and production statistics.
.
Musicals.net
.
Playbill magazine
.
Talkin' Broadway
Discussion, interviews, reviews.

Cabaret

Classic Hollywood Movie Musicals
Class Act.
.
Composers of musicals.
An alphabetical index from The Open Directory Project.
.
The Cyber Encyclopedia of Musical Theatre, TV and Film
600+ pages and 2000+ illustrations. A beginners course.
.
D

Directories of musicals

A directory of musicals,
an alphabetical name index from the Open Directory Project.
.
Definitive Musical Guide to West End Musicals
Searchable database of songwriters, productions, producers, stages.
.
Musical.net
A web guide to musicals.
.
Musical Heaven
Synopses of musicals, alphabetically listed.
.
List of musicals: A to L
Wikipedia

F

Filmed musicals  See also this page

Animated musicals.
Yahoo
.
Classic Hollywood Movie Musicals
Class Act
.
Filmed musicals directory.
Golden Movie Musicals. Classical Musicals.com
.
Films based on plays or musicals.
Wikipedia
.
Internet Movie Database of Movie Musicals.
.
List of musical films by year.
Wikipedia.
.
Open Directory web directory of filmed musicals.
.
Wikipedia entries on film musicals.

German musicals, German productions
.
Green Panda Theatre
Green Panda Theatre publish two musicals available to license, Berlin and Rising Sun, the New Songs for Musical Theatre Songbooks and music for pantos.
.
H

Hairspray

Hello, Dolly
Synopsis, review, credits, awards.
.
History of Musicals, stage and screen,
from the 1920s to the present day. Musicals101.com.
.
I

India . Musical films made in India

Internet Movie Database of Movie Musicals

L

Les Misérables
.
Libretti and lyrics. Translations.
.
London Theatre Bookings
.
Lyrics

Lyrics and libretti for musicals.
.
Lyrics of classic musicals.
A web directory from Broadway Musical Home.
.
Synopses of musicals, alphabetically listed.

Mary Poppins

Musical Heaven
Synopses of musicals, alphabetically listed.
.
Musicals.net
Lyrics, song list, synopses, and other various information about musicals.
.
Musical Theatre, Wikipedia entry.
.
Musicals
Open Directory web directory of musicals, alphabetically listed.
.
Musicals.101
A Cyber Encyclopedia of Musical Theatre, TV and Film. How musicals are made. Getting the Idea, workshops, raising the money...
.
Musical Theatre International
One of the world's major dramatic licensing agencies, specializing in Broadway, Off-Broadway and West End musicals.
.
Music Box International,
a not-for-profit company dedicated to finding and distributing affordable musicals and stage plays for middle schools, high schools, colleges and universities, community theatre groups, as wells as professional theatre companies. 
.
Musicals - directories

A directory of musicals,
an alphabetical name index from the Open Directory Project.
.
Musical.net
A web guide to musicals.
.
List of musicals: A to L
Wikipedia

Netherlands musical productions.
.
New musicals. New Musicals.com
An international website providing exposure for new musicals and their creative team to producers, directors, agents and producing organizations such as professional, regional, community and university theaters as well as schools.
.
O

Open Directory web directory of musicals, alphabetically listed.
.
P

Phantom of the Opera
.
Priscilla, Queen of the Desert
.
R

The Rocky Horror Picture Show

Research sources: books, discographies, dictionaries.
MIT
.
Rock musicals.
.
S

Scripts and scores for musicals,
a site from the U.K.
.
Singin' in the Rain

The Sound of Music

Synopses of musicals, alphabetically listed.
. 
V

Vienna. Viennese musicals.
.
W

West End Theatre Guide, London.
News and bookings.
.
Wikipedia entry on Musical Theatre
.
The Wizard of Oz

Composers and lyricists of classic musicals

Bart, Lionel. Lionel Bart, a website directory.

Berlin, Irving. Irving Berlin

Bernstein. Leonard. Leonard Bernstein website.
Photographs, lectures, working notes, audio clips.

Andrew Lloyd-Webber online.
.
Andrew Lloyd Webber Tiretracks
Catalogue, news, discography.
.
Andrew Lloyd Webber's The Phantom of the Opera
Official film site by The Really Useful Group. Offers photos, merchandising, music clips and reviews.
.
Phantom of the Opera, The official site.
.
Andrew-Lloyd Webber
Web directory from The Open Directory Project.

Frederick Loewe and Alan Jay Lerner
Naxos records (sign in for audio streams)

South Pacfic
.
The Sound of Music
IMDB

The Sound of Music
.
The Sound of Music  lyrics.
.
The Sound of Music
Wikipedia entry.

Rodgers and Hammerstein Archives of Recorded Sound
New York Public Library

Richard M Sherman
Wikipedia entry.