You can safely remove the 2 Elf Songs in the deck. They simlpy do not do enough for you as is, because if you DO have problems against corruption, 2 burdens won't do you squat, a dedicated corruption deck WILL roll you over. Also, if corruption is NOT such a big problem, those 2 burdens PROBABLY won't make a difference anyway. Last, for the same result you're going for right now, you could simply lose a Silver Ewer for a
Phial of Galadriel (I'm assuming it's not banned or anything), and BAM, same result, "4 extra resistance", but costing you 2 cards instead of 4 (and 2 less twilight and one more drawn card, since if you get 2 Ewers, you have to discard one EOT, while if you get the Phial, you can play it and discard ANOTHER card EOT, resulting in an extra drawn card for an otherwise big deck).