The title of a great musical composition is not always a clear or simple matter. An allusive title, particularly in a foreign language, or a title that does not seem related to the work, can confuse even the most devoted music lover.

Here are histories of the creation of 3,500 titles for symphonies, operas, oratorios, ballets, orchestral works, choral works, chamber music, keyboard compositions, and songs, ranging from the popular to the obscure. Each entry (arranged by English, French, German, Italian or Spanish title) includes alternate titles where appropriate, the composer's name, date of composition and first performance, opus number where appropriate, a description of the work, and the origin of the title or any story behind it. A bibliography and an index conclude the work.