Play The Name That Song Game
The host plays a few seconds of a song and the guests try to guess it.
Provide each guest with a paper and pencil
Have them write down their answers on a piece of paper.
Collect the papers to see who guessed the most songs correctly
Your guest that has the most right songs wins.
Try Country music, Rock, and others to give a good variety and try to make it harder for those who know one sector well.