The overture of the opera has long been a favorite piece on concert programs. Like that of "The Flying Dutchman" it is the story of the whole opera told in music. It certainly is one of the most brilliant and effective pieces of orchestral music and its popularity is easily understood. It opens with the melody of the Pilgrims' chorus, beginning softly as if coming from a distance and gradually increasing in power until it is heard in all its grandeur. At this point it is joined by a violently agitated accompaniment on the violins. This passage evoked great criticism when it was first produced and for many years thereafter. It was thought to mar the beauty of the pilgrims' chorus. But without doing so at all it conveys additional dramatic meaning, for these agitated phrases depict the restlessness of the world as compared with the grateful tranquillity of religious faith as set forth in the melody of the Pilgrims' chorus.
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Having reached a climax, this chorus gradually dies away, and suddenly, and with intense dramatic contrast, we have all the seductive spells of the Venusberg displayed before us—that is, musically displayed; but then the music is so wonderfully vivid, it depicts with such marvellous clearness the many-coloured alluring scene at the court of the unholy goddess, it gives vent so freely to the sinful excitement which pervades the Venusberg, that we actually seem to see what we hear. This passes over in turn to the impassioned burst of song in which Tannhäuser hymns Venus's praise, and immediately after we have the boisterous and vigorous music which accompanies the threatening action of the Landgrave and minnesingers when they draw their swords upon Tannhäuser in order to take vengeance upon him for his crimes. Upon these three episodes of the drama, which so characteristically give insight into its plot and action, the overture is based, and it very naturally concludes with the Pilgrims' chorus which seems to voice the final forgiveness of Tannhäuser.
The curtain rises, disclosing all the seductive spells of the Venusberg. Tannhäuser lies in the arms of Venus, who reclines upon a flowery couch. Nymphs, sirens, and satyrs are dancing about them and in the distance are grottoes alive with amorous figures. Various mythological amours, such as that of Leda and the swan, are supposed to be in progress, but fortunately at a mitigating distance.
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Much of the music familiar from the overture is heard during this scene, but it gains in effect from the distant voices of the sirens and, of course, from artistic scenery and grouping and well-executed dances of the denizens of Venus's court. Very dramatic, too, is the scene between Venus and Tannhäuser, when the latter sings his hymn in her praise, but at the same time proclaims that he desires to return to the world. In alluring strains she endeavours to tempt him to remain with her, but when she discovers that he is bound upon going, she vehemently warns him of the misfortunes which await him upon earth and prophesies that he will some day return to her and penitently ask to be taken back into her realm.
Dramatic and effective as this scene is in the original score, it has gained immensely in power by the additions which Wagner made for the production of the work in Paris, in 1861. The overture does not, in this version, come to a formal close, but after the manner of Wagner's later works, the transition is made directly from it to the scene of the Venusberg. The dances have been elaborated and laid out upon a more careful allegorical basis and the music of Venus has been greatly strengthened from a dramatic point of view, so that now the scene in which she pleads with him to remain and afterwards warns him against the sorrows to which he will be exposed, are among the finest of Wagner's compositions, rivalling in dramatic power the ripest work in his music-dramas.
Wagner's knowledge of the stage is shown in the wonderfully dramatic effect in the change of scene from the Venusberg to the landscape in the valley of the Wartburg. One moment we have the variegated allures of the court of the Goddess of Love, with its dancing nymphs, sirens, and satyrs, its beautiful grottoes and groups; the next all this has disappeared and from the heated atmosphere of Venus's unholy rites we are suddenly transported to a peaceful scene whose influence upon us is deepened by the crucifix in the foreground, before which Tannhäuser kneels in penitence. The peacefulness of the scene is further enhanced by the appearance upon a rocky eminence to the left of a young Shepherd who pipes a pastoral strain, while in the background are heard the tinkling of bells, as though his sheep were there grazing upon some upland meadow. Before he has finished piping his lay the voices of the Pilgrims are heard in the distance, their solemn measures being interrupted by little phrases piped by the Shepherd. As the Pilgrims approach, the chorus becomes louder, and as they pass over the stage and bow before the crucifix, their praise swells into an eloquent psalm of devotion.