I still stand with my opinion that everything was re-recorded, old song or not. Why? Because a) it just sounds like that to me (Jon even has that "problem" with sounding like having too much spit in his mouth or something (sorry, can't describe it better) on just about every song, which he only had since WAN) and b) at least Shanks said so, if I remember correctly.

So yeah, it should be something they are still capable of doing