This one depends on the theme of the debut. If it is the traditional type, then classical music is the call of the day. For this one can also opt to have any of the popular love songs of your choice. If the debut is something with an 80's or 70's theme, then the choice of music for the cotillion should be taken from this era and the choreography should likewise be based on that. You are free to make your party as unique and as exciting as you want it to be.