Improved Organization - Grouping

[arn]

Can people tell me how they would group their songs?

If you were given the option to subgroup your songs into arbitrarily labeled subgroups. What subgroups would you use? (you don't have to list your songs... just the title/theme of the groups)

Assume a one-to-one relatioship. One song can only be in one group.

If there were a one-to-many relationship (one song could be in multiple groups) would that change your groupings?

arn