Noun
wedding song (plural wedding songs)
Originally, a song composed for and/or sung at a wedding, an epithalamium; now a song, typically a popular love song, chosen by the bride and groom to be played at their wedding.
The wedding song had staggered on and off pitch half into the night, and by then it was time to go. Source: Internet
Which Disney song would you want for your wedding song? Source: Internet