I am recording weddings.

I am recording weddings. There are times when couple is choosing music that plays when they are walking in to the receiption or ceremony. At the same time, speeker is talking. I am not sure if music that couple use is copyrighted. In order for me to use voice of the speeker I have to include part of pottentially copyrighted music. Can I be sued by the artist for including part or even whole song in the video and publishing it?