There are two pieces of wedding music, one is Mendelssohn's Wedding March (selected from A Midsummer Night's Dream) and the other is Wagner's Wedding Chorus (selected from lohengrin). Which one do you want? The latter is common in the market, so listen to it online first.

Okay, you wanted Mendelssohn's version, and I found it.

http://bbs.popiano.org/viewthread.php? tid = 7452。 Highlight =% bb% e9% c0% f1%BD% F8% d0% d0% C7% fa