^ But then like... most of her songs would end up getting picked.

If you did like 14 for each genre, and say you did three genres (rock, pop, ballads) then you'd have like 42 songs ending up being selected... That's almost 1/3 songs I think. I guess that just seems too broad to really show which songs are fan favorites, but maybe that's just me..?
Edit: Or maybe you could do different CDs for each genre, and then like a general CD to mix them up?