My vote is for #2 and the years, with the clever 25 year proviso that Derek has come up with, over #1, with the sub-genres. I like playing one song after another. More voting. Each song is potentially worth more. Only questions: How do we pick the year (s)? What if two people want the same year? If it's first come, first serve, can I take 1967 and 1992? :)