Opera

Free to read here, from Project Gutenberg.

Le Fantôme de l'Opéra

Gaston Leroux

French

The Phantom of the Opera

Gaston Leroux, also an audiobook

The Song of the Lark

Willa Cather, also an audiobook

Fair Margaret: A Portrait

F. Marion Crawford

The Perfect Wagnerite: A Commentary on the Niblung's Ring

Bernard Shaw, also an audiobook

The Russian Opera

Rosa Newmarch

The Opera

R. A. Streatfeild

Debussy's Pelléas et Mélisande

Lawrence Gilman

History of the Opera from its Origin in Italy to the present Time

H. Sutherland Edwards

Gullible's Travels, Etc.

Ring Lardner, also an audiobook

The Mapleson Memoirs, 1848-1888, vol I

James Henry Mapleson

The Mapleson Memoirs, 1848-1888, vol II

James Henry Mapleson

Old Scores and New Readings: Discussions on Music & Certain Musicians

John F. Runciman

Some Forerunners of Italian Opera

W. J. Henderson

Musiciens d'autrefois

Romain Rolland

French

The Operatic Problem

William Johnson Galloway

Gertrud

Hermann Hesse

German

The story of opera

E. Markham Lee

The Great Musicians: Rossini and His School

H. Sutherland Edwards

Interpreters

Carl Van Vechten

The Development of Certain Tendencies in Modern Opera

Kathryn Eleanor Browne

Aspects of Modern Opera: Estimates and Inquiries

Lawrence Gilman

Chapters of Opera

Henry Edward Krehbiel

The Mentor: Makers of Modern Opera, Vol. 1, Num. 47, Serial No. 47

Henry Edward Krehbiel

Wagner's "Tristan und Isolde": An Essay on the Wagnerian Drama

George Ainslie Hight

The Countess of Rudolstadt

George Sand

The Primadonna

F. Marion Crawford

Physiology of the opera

Scrici, also an audiobook

Bruggil's bride

Robert F. Young