A very old song. It's also used for weddings. The whole song is just music and tune. There are no lyrics. The climax goes like this Deng Deng Deng 。。。。 Deng Deng Deng. Deng Deng.

One is Mendelssohn's Wedding March. Originally the prelude to Act V of the opera A Midsummer Night's Dream, this work, completed when Mendelssohn was 17, was originally a piano overture for four hands that he wrote for Shakespeare's play of the same name, and was loved by the world for its wonderful fantasy and romantic interest, which the composer later adapted for orchestra.

One is Wagner's Wedding March. Originally a mixed chorus "Wedding Chorus" at the beginning of Act III of the opera "Lohengrin", it was named "Wedding March" because it was often used as wedding music, and was later adapted into an orchestral piece.

The former is joyous and passionate, the latter solemn.

According to Western tradition, Wagner's Wedding March is played when the bride enters the church. The bride and groom to play Mendelssohn's "Wedding March" as they walk out of the church.