I am marrying into a family of very talented musicians and singers. It is a tradition in their family that someone sings and plays the song for the first dance. My future sister & mother-in-law have amazing talent and their singing is beautiful. I agreed with my fiance that we want his mom and possibly his sister to sing a song for our first dance. My mother, however, said no way. She said there is no point in them singing and she doesn't understand why they need to sing. I explained to her that it's a Burns thing and it what they do in their family. Seems like at every wedding, they have sung the first dance song. She keeps saying that it's not going to happen and won't listen to me when I say I want MIL to sing. I am not sure what to do because I know she will be very hurt if I tell her she can't sing.