Gluck's principle.
Descriptive titles.
The earliest fixed form of the overture is preserved to the current lists of to-day by the compositions of Bach and Handel. It is that established by Lully, and is tripartite in form, consisting of a rapid movement, generally a fugue, preceded and followed by a slow movement which is grave and stately in its tread. In its latest phase the overture has yielded up its name in favor of Prelude (German, Vorspiel), Introduction, or Symphonic Prologue. The finest of these, without borrowing their themes from the works which they introduce, but using new matter entirely, seek to fulfil the aim which Gluck set for himself, when, in the preface to "Alceste," he wrote: "I imagined that the overture ought to prepare the audience for the action of the piece, and serve as a kind of argument to it." Concert overtures are compositions designed by the composers to stand as independent pieces instead of for performance in connection with a drama, opera, or oratorio. When, as is frequently the case, the composer, nevertheless, gives them a descriptive title ("Hebrides," "Sakuntala"), their poetical contents are to be sought in the associations aroused by the title. Thus, in the instances cited, "Hebrides" suggests that the overture was designed by Mendelssohn to reflect the mood awakened in him by a visit to the Hebrides, more particularly to Fingal's Cave (wherefore the overture is called the "Fingal's Cave" overture in Germany)—"Sakuntala" invites to a study of Kalidasa's drama of that name as the repository of the sentiments which Goldmark undertook to express in his music.
Serenades.
The Serenade in Shakespeare.
A form which is variously employed, for solo instruments, small combinations, and full orchestra (though seldom with the complete modern apparatus), is the Serenade. Historically, it is a contemporary of the old suites and the first symphonies, and like them it consists of a group of short pieces, so arranged as to form an agreeable contrast with each other, and yet convey a sense of organic unity. The character of the various parts and their order grew out of the purpose for which the serenade was originated, which was that indicated by the name. In the last century, and earlier, it was no uncommon thing for a lover to bring the tribute of a musical performance to his mistress, and it was not always a "woful ballad" sung to her eyebrow. Frequently musicians were hired, and the tribute took the form of a nocturnal concert. In Shakespeare's "Two Gentlemen of Verona," Proteus, prompting Thurio what to do to win Silvia's love, says:
"Visit by night your lady's chamber window
With some sweet concert: to their instruments
Tune a deploring dump; the night's dread silence
Will well become such sweet complaining grievance."
Out-of-doors music.
Old forms.
The "Dump."