Hello... It`s me again.

1st:
I really love your skald prestige class.

2nd: Fugue Verse
Is it really a charming ability? (What is hold person/monster? Don`t have my books here)
3rd: War/Blood Chant
I am not sure, could War Chant/Blood Chant be compulsion? (I believe not, at least not be the rules interpretation...) It would have no effect, I think...
4th:
Battle Dirge
I am not sure if that`s what you meant it to be, but I suggest:
Battle Dirge should become more effective due to the duration, so the first round, the targets are just shaken, the second round frightenend and the third panicked (at least if they fail their save.)
Hmm, but writing this, I wonder if it makes sense that you start just being a little shaken, and than the fear grows? ... Difficult.
5th: DCs (once again)
10+half Hit Dies+CHA? With Hit Dies, do you "only" mean the hit dies gained as skald, or do you mean the total hit dies? The last, I don`t think is a good idea. (But the first would really weaken the DC, wouldn`t it?)
Well, personally I would still prefer Battle Dirge having a DC equal to the perform (or intimidate) result (as a supernatural ability, it ifts), and Fugue Verse having a DC of a Hold Monster Spell (cast by a cleric), perhaps adding the Charisma Modifier (though the last think is not "by the book examples" of spellike abilities).
I wish you much fun with your skald, and perhaps I will steal some (or all) ideas. (Though I don`t know when I will ever play a skald, even if I would really like to.)
Mustrum Ridcully