The short acapella performances from their radio show "Kalafina Club", where they pick a random J-Pop song and sing a bit of it before starting the show. They also did a short acapella version of "Storia" all the way back in 2009.
Destination Unknown live. For that matter, Destination Unknown studio recording.
Mata Kaze Ga Tsuyoku Natta, moreso in the live performances than the studio recording. Especially in the Red Moon Live at JCB Hall.