It did make me wonder what Remilia would think of it, especially such an organ arrangement of it. Given the relative 'recentness' of its composition (1874, according to wikipedia) given the GG timeline (assuming Saint-Saëns is the same across universes, to even begin with). Of course, I semi-doubt if she's even familiar with the orchestral/original version, given that she's been largely a shut-in since...well before then.